Answer:
A. Mass extinctions, Wegenerian cycles, and the emergence of new life forms
Explanation:
Every geological period is characterised by episodes of mass extinction, Wegenerian cycles and emergence of new life forms.
The boundaries of most geologic periods are usually mass extinction periods and these mass extinction activates new evolution of life forms. For example, the period between the Mesozoic era and Cenozoic is marked by the K-T extinction where dinosaurs and about 75% of all life became extinct. New advanced mammals sprang up shortly after the extinction in the Cenozoic era.
During the geologic period, series of tectonic activities are in play as a result of the internal workings of the earth. Continents splits apart and new landform arises at plate boundaries. This is the Wegenerian cycle. The external processes like weathering and erosion helps to recycle the landforms and keeps it in check.
Why are some units of the geologic time scale longer and some shorter?
The geologic time scale is divided into several different units. There are eon, era, period, epoch. They all have different lengths, and some are very long, while some are much shorter. The eon is the longest of them all spending for over half a billion years, or even more than a billion. The era stretches for few hundreds of millions of years. The period lasts for tens of millions of years, while the epoch is stretching for several millions of years. The reason why they are with different lengths is that they are marked by certain important events in the past. Some are marked by significant changes in the climate, some by extinction of species, some by big disasters, some by changes on the surface of the Earth, some by the changes of the atmosphere.
What country has the highest average elevation in the world
1. Bhutan
2. Nepal
3. Tajikistan
Each one exceeds 10,000 avg. feet, Bhutan being the tallest avg.
What continent is entirely in the northern and western hemispheres?
Answer:
North America
Explanation:
Answer:
North America
Explanation:
What sea sits just off the ross ice shelf
Answer: it is the Ross Sea
The magnitude of an earthquake is a number that represents the
The magnitude of an earthquake is a number that represents the Strength of an earthquake.
What is Earthquake?When strain energy in the Earth's crust suddenly releases, it causes waves of shaking to propagate outward from the earthquake source. When forces in the crust exceed the rock's strength, it fractures along weak zones, either along an old fault plane or a new one.
The focus or hypocentre, which can be located many kilometers below the surface of the ground, is where an earthquake begins. The epicenter of an earthquake is the location at the surface that is directly above the focal.
An earthquake is the shaking of the Earth's surface caused by a sudden release of energy in the Earth's lithosphere, which generates seismic waves. It is also referred to as a quake, tremor, or temblor.
Therefore, The magnitude of an earthquake is a number that represents the Strength of an earthquake.
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Final answer:
The magnitude of an earthquake is a number that quantifies the energy released during the event, measured on scales like the Richter and Moment Magnitude scales. These scales are logarithmic, showing a significant increase in energy with each unit increase. Understanding earthquake magnitude helps assess potential damage and the need for preparedness.
Explanation:
The magnitude of an earthquake is a number that represents the absolute size or intensity of the earthquake, quantifying the amount of energy released during the event. It's measured on scales like the Richter scale and the Moment Magnitude Scale, which consider various factors such as the amplitude of seismic waves, the amount of slippage, and the area of the rupture. These scales are logarithmic, meaning that each step on the scale represents a significant increase in energy; for instance, a quake of magnitude 6 releases 32 times more energy than one of magnitude 5 on the Richter scale, and a difference of one unit on the Richter scale equates to a ten-fold difference in wave amplitude.
Understanding earthquake magnitude is crucial for assessing the potential damage an earthquake can cause. High-magnitude earthquakes can cause significant destruction, influencing building codes and emergency response planning. It emphasizes the importance of earthquake preparedness in regions prone to seismic activity.
How did this technology make the eqyptian revolution different from earlier revolutions elsewhere in the world?
Answer: The Egyptian revolution of 2011, also known as the January 25 Revolution, started on 25 January 2011 and spread across Egypt. The date was set by various youth groups to coincide with the annual Egyptian "Police holiday" as a statement against increasing police brutality during the last few years of Mubarak's presidency. Started on 25 January 2011 and spread across Egypt. The date was set by various youth groups to coincide with the annual Egyptian "Police holiday" as a statement against increasing police brutality during the last few years of Mubarak's presidency.
It consisted of demonstrations, marches, occupations of plazas, non-violent civil resistance, acts of civil disobedience and strikes. Millions of protesters from a range of socio-economic and religious backgrounds demanded the overthrow of Egyptian President Hosni Mubarak. Violent clashes between security forces and protesters resulted in at least 846 people killed and over 6,000 injured.[22][23] Protesters retaliated by burning over 90 police stations across the country.
Explanation: The Egyptian protesters' grievances focused on legal and political issues, including police brutality, state-of-emergency laws, lack of political freedom, civil liberty, freedom of speech, corruption,high unemployment, food-price inflation and low wages. The protesters' primary demands were the end of the Mubarak regime and emergency law. Strikes by labor unions added to the pressure on government officials.
During the uprising, the capital, Cairo, was described as "a war zone" and the port city of Suez saw frequent violent clashes. Protesters defied a government-imposed curfew, which was impossible to enforce by the police and military. Egypt's Central Security Forces, loyal to Mubarak, were gradually replaced by military troops. In the chaos, there was looting by rioters which was instigated (according to opposition sources) by plainclothes police officers. In response, watch groups were organized by civilian vigilantes to protect their neighborhoods.
On 11 February 2011, Vice President Omar Suleiman announced that Mubarak resigned as president, turning power over to the Supreme Council of the Armed Forces (SCAF). The military junta, headed by effective head of state Mohamed Hussein Tantawi, announced on 13 February that the constitution is suspended, both houses of parliament dissolved and the military would govern for six months (until elections could be held). The previous cabinet, including Prime Minister Ahmed Shafik, would serve as a caretaker government until a new one was formed.
-Hope this helped-
-The Girl who loves history-
Answer:
D. Use of social media
Explanation:
The social media is a powerful tool for the spread of the information and data to a different part of the world very easily and quickly. And this tool was responsible for the spread of the revolution in the technology in the worldwide areas.Planet with an atmosphere that rains sulfuric acid is ____
What is the capital of the united states largest state
Answer:
Juneau
Explanation:
The largest state in the United States is Alaska. The capital of this detached state is Juneau. Juneau has been the capital of Alaska since the beginning of the 20th century, more specifically from 1906. This city is actually not the biggest in Alaska, but instead it is the second largest, though it is a center of large portion of the things that happen in the state. The population of the city itself is little over 32,000 people, making it the least populous capital city of any state in the United States. As a metropolitan area though, the population is around 100,000 people. It can not really be expected for this city to be much larger as the climate and the geography simply don't provide the conditions for big growth.
Answer:
Juneau,alaska
Explanation:
When the north end of Earth's axis is tilted toward the sun, North America will experience ______.
Answer:Day time
Explanation: North America would be faced towards the sun meaning it would be day time
According to this map, where in the country would you have been MOST likely to find iron mines?
A) northeast
B) northwest
C) southeast
D) southwest
I think it would be B) northwest
That shows the most iron ore deposits which would mean that is probably where the most iron mines would be.
According to the given map, the iron mines are most likely to find in the area of northwest.
What is the iron mines?The term “iron mine” is defined to mines that extract iron ore or ferriferous minerals. This is found out that most of the iron miles is comes from the northwest area. Magnetite, limonite, goethite and siderite are common iron minerals that are found in the northwest.
Therefore, option B is correct.
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The bending of waves around the edge of a barrier is known as
The answer is diffration hope this helped!
Which material most likely has the highest level of permeability?
A. Sand
B. Clay
C. Gravel
D. Silt
Answer:
Silt
Explanation:
Permeability is what allows liquids or gasses to flow through or pas through a material.
Silk has the highest level of permeability, causing gasses and liquids to easily flow through it.
Sand, clay and gravel do not have high levels of permeability. That is why these substances are used to filter water. They do not allow liquids or gasses to easily flow through them, causing them to loose any dirt or physical sustenance.
Mordancy.
The material that most likely has the highest level of permeability is Gravel. Gravel and sand are both permeable and porous.
What do you mean by permeability?Permeability refers to the quality or state of being permeable that can penetrate especially liquid or gas.
The material that most likely has the highest level of permeability is Gravel.
Therefore, C is the correct option.
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Which process can affect the rate of carbon dioxide emissions or other greenhouse gas emissions by changing average temperatures?
A. Greenhouse gas feedback
B. Cloud cover feedback
C. Axial precession
D. Continental drift
Answer:
A. Greenhouse gas feedback
Explanation:
Greenhouse effect is a natural atmospheric phenomenon responsible for maintaining life on earth. Without the presence of this phenomenon, the temperature on Earth would be very low, around -18ºC, which would make the development of living beings impossible.
There are several greenhouse gases in the atmosphere capable of absorbing solar radiation radiated from the earth's surface, preventing all heat from returning to space. Part of the energy emitted by the sun to Earth is reflected into space, some is absorbed by the earth's surface and oceans. A portion of the heat radiated back into space is retained by the greenhouse gases present in the atmosphere. In this way, the energy balance is maintained, so that there are no large thermal amplitudes and temperatures are stable.
However, the high concentration of these gases in the atmosphere makes it even more difficult for heat to disperse into space, increasing the planet's temperatures. The greenhouse effect has been aggravated by the increasing emission of greenhouse gases into the atmosphere. This emission is caused by anthropogenic activities such as burning of fossil fuels, gases emitted by car exhausts, waste treatment, fertilizer use, agricultural activities and various other industrial processes.
The rate of carbon dioxide emissions or other greenhouse gas emissions by changing average temperatures affects the process of Greenhouse gas feedback. Thus, the correct option is (A).
The majority of animals that exhale carbon dioxide as a waste product are natural carbon dioxide sources.
The main source of carbon dioxide emissions from human activity is energy generation, which includes burning coal, oil, or natural gas.
Carbon dioxide is a chemical that humans frequently emit into the atmosphere when they burn fossil fuels like coal or gas.
Climate change is caused by the planet's atmosphere getting overheated as a result of carbon dioxide emissions. In fewer than 200 years, human activity has increased the atmosphere's carbon dioxide content by 50%.
Therefore, the correct option is "A".
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The pacific ocean touches all continents except which two?
Answer:
Africa and Europe
Explanation:
The Atlantic Ocean touches these continents.
What type of cloud is often formed by fog lifting in the morning?
A cloud formed by fog lifting in the morning is a stratus cloud
What are the four countries with the largest land areas in the western hemisphere?
Answer:
Canada, United States, Brazil, Argentina
Explanation:
The four largest countries by area in the Western Hemisphere are Canada, United States, Brazil, and Argentina. These countries are located in North and South America, with Canada and the United States being in North America, while Brazil and Argentina being in South America. All of these countries are in the top 10 largest countries in the world by area, with Canada being on the second place, the United States on third, Brazil fifth, and Argentina eight. One of the main reasons why these countries are so large is because they are countries of the New World, all being former colonies, where the populations where relatively small, but the European settlers managed to occupy very large areas. Once they gained independence, the boundaries were set in accordance to the colonial boundaries, so instead of having numerous smaller countries divided because of ethnicity, race, or culture, large multiracial, multiethnic, multicultural countries were established.
The four countries with the largest land areas in the Western Hemisphere are Canada, the United States, Brazil, and Argentina. Additional information is required to determine which country has the largest percentage of its land protected.
Explanation:In the Western Hemisphere, the four countries with the largest land areas are:
Canada: Spanning much of the northern part of North America, Canada is the second-largest country in the world by total area.the United States: Including the contiguous states as well as Alaska and the island state of Hawaii, the U.S. ranks third in the world by total land area.Brazil: The largest country in South America, Brazil ranks fifth in the world by total area.Argentina: Ranking as the eighth-largest country in the world, Argentina is South America's second-largest country by physical area.When considering the question of which country has the largest percentage of its land protected, this information does not provide a direct answer. We would need additional data on the protection status of lands within each country to answer definitively.
Which of the following statements about the force attracting these two galaxies is true?
a) It is the same force that causes an apple to fall to the ground.
b) The force will get weaker as time passes.
c) It is a mysterious force, whose nature remains completely unknown to scientists.
d) It is a force unlike any force that we ever experience on Earth.
The force that makes two galaxies to be attracted to each other is the same force that causes an apple to fall to the ground. This is known as the Gravity Force.
This force was named by Issac Newton, after some empirical observations in nature and then he published the Universal Law of Gravitation on 1687:
The force [tex]F[/tex] exerted between two bodies of masses [tex]m1[/tex] and [tex]m2[/tex] and separated by a distance [tex]r[/tex] is equal to the product of their masses and inversely proportional to the square of the distance.
Written in a mathematical form is:
[tex]F=G\frac{(m1)(m2)}{r^2}[/tex]
Where [tex]G[/tex]is the gravitational constant
So, this force between two bodies (two galaxies or an apple and the ground) is directly proportional to the product of the mass of both and inversely proportional to the square of the distance that separates both bodies.
This means the gravity force decreases when the distance between these two bodies increases.
Therefore, the correct option is a.
The force attracting the two galaxies is gravity, which is the same force that causes an apple to fall to the ground. Gravity is well understood and is responsible for various phenomena on Earth and in space. Other options are incorrect for different reasons. So, the correct answer is a.
Here are some key points to explain this:
Gravity is the weakest of the four fundamental forces in nature, yet it has an infinite range and affects all masses.This force keeps us grounded on Earth, causes apples to fall, and ensures planets orbit the Sun.It also binds galaxies into clusters by exerting an attractive force between them.The nature of gravity is well studied, though it's described as weaker compared to other forces like electromagnetism.The other options are incorrect for the following reasons:
b) The force will get weaker as time passes. Gravity is constant unless other forces or factors change the mass or distance significantly.c) It is a mysterious force, whose nature remains completely unknown to scientists. While there are still questions about gravity, its basic principles are well understood.d) It is a force unlike any force that we ever experience on Earth. This is incorrect as gravity is experienced daily in various forms, such as keeping us grounded and causing objects to fall.What is the most common color used in national flags?
if you look at all of the flags together, you'll see that most of them have some shade of green on them.
Which statement correctly explains what is happening?
Oceanic and continental plates are colliding.
Oceanic and continental plates are shifting past each other.
Oceanic and continental plates are forming a large mountain.
Oceanic and continental plates are creating several island chains.
Answer:
Oceanic and continental plates are colliding.
Explanation:
Answer:
Oceanic and continental plates are colliding.
Explanation:
The collision of the ocean and continental plates makes the oceanic plates denser by overriding them by thicker and less thick continental plates. The ocean plates are forced to move down to the mantle through a seduction process. The melting, therefore, produces magma above the sub ducting ocean plates.
The magma chambers are usually not concentrated like the mantle material within the surrounding. The depth and size of the magma can be determined by mapping the earthquake activities happening around.
What are the four zodiac signs for the summer months in the northern hemisphere?
Answer:
Gemini, Cancer, Leo, Virgo
Explanation:
The zodiac signs have been created very long time ago, and they have been based on the positions of the space objects relative to the position of the Earth, or rather from Earth's perspective. They have been associated with numerous things, be it mythology, how would someone's character be, some would someone look physically, and even for predicting the future in accordance to the zodiac sign. It is not just the space objects that are determined as zodiac signs, but big influence is attributed to the planets in our solar system as well, as they can be detrimental to a particular phase of the zodiac signs. There's 12 zodiac signs, though a 13th has been added because of the movement of the space objects and change of positions, thus emergence of one more that can be included, but it is still not widely used. The four zodiac signs for the summer months in the Northern Hemisphere are the Gemini, Cancer, Leo, and Virgo, all of which have totally different characteristics from one another.
which of the following is not a form of political participation
You have to show us the political participation
The correct answer is C) paying taxes.
The other options of the question were A) voting in elections. B) contacting public officials. D) protesting government decisions.
Paying taxes is not a form of political participation.
Political participation is when you actively participate and write to your representatives to ask or demand a solution to a problem. That is why you voted for them. And you follow up on your petition. If nothing happens, you organize demonstrations, go to TV stations, send comments to radio stations or took the streets to protest and make your voice heard.
Paying taxes is your obligation as a citizen. It is not considered to be political participation.
the histogram shows the weights, in pounds, of checked luggage on a flight. the median weight of a checked bag is 27.5 pounds. how does the mean of the data most likely compare to the median? the mean is most likely less than 27 pounds
Answer:
The mean is most likely exactly 27.5 pounds, is true about the given statement The median weight of a checked bag is 27.5 pounds.
Explanation:
Median weight of a checked bag is= 27.5 pounds
it means , if there are n bags , the middlemost bag has weight 27. 5 pounds.
For , a data set, if it is symmetrical on both sides that is if difference between two succeeding values are same,then
Median = Mean
Otherwise , in some cases
Either, Median > Mean or Mean > Median.
Supposing each bag to be Equivalent, that is if they have equal weight,
Mean can't exceed ≥ 27.5 Pounds
Answer: The mean is most likely exactly 27.5 pounds.
Explanation:
Edge 2020
Brainliest if correct!! I can check and you must look at both pictures!!! 100 points!!
Answer:
For the first one, it is 3
For the second one, it is 2
Explanation:
For the first one, since there is a planet that it is orbiting. This will produce the drag that is needed to help the moon keep circling around Planet X.
Answer: For the first one, it is 3
For the second one, where there is no more drag. The moon will just keep going straight because there is nothing to help make the circle go around an object.
Answer: For the second one, it is 2
Which layer of the atmosphere contains the most water vapor?
Where are the multiplied choices?
I believe that would be the troposphere, hopefully that’s one of your options!
What is the circumference of the circle in terms of pi? 20 in the circle.
A. 20pi in.
B. 40pi in.
C. 60pi in.
D. 400pi in.
Answer:
Explanation:
I’m so confused the answer should be 126 but that’s not an answer choice
Which of these represents an enclave?
A) 1
B) 2
C) 3
D) 5
That would be D
Enclave- A country or part of a country that is within the boundaries of another country.
This could get confused with number 3. Number 3 is not an enclave because it is just on the border of other countries, but number 5 is an enclave because it is surrounded by one whole country. I hope that makes some kind of sense.
Hope this helps :)
I’m not sure but I believe it is D. 5
Jet streams are embedded in the prevailing westerlies and are also described in what way?
A. are intermittent during the summer months
B. are turbulent wind currents that slow air travel
C. are pockets of hot and humid air
D. are high speed winds, 10 km above the ground
Jet streams are fast flowing, narrow, meandering air currents in the atmospheres of some planets, including Earth near the tropapouse.
So the answer is D.
The correct option is, (D) are high speed winds, 10 km above the ground.
What is the direction of jet streams?Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. The winds blow from west to east in jet streams but the flow often shifts to the north and south.What is the jet stream and is it related to the westerlies?Jet streams are fast flowing, narrow, meandering air currents in the atmospheres of some planets, including Earth. On Earth, the main jet streams are located near the altitude of the tropopause and are westerly winds (flowing west to east).What is the difference between westerlies and jet streams?So jet streams flow from west to east in both the hemispheres and hence they are called westerlies or upper level westerlies. Jet streams when weak move in the direction of westerlies in a wavy irregular manner with a poleward or equator ward component.
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What are the 3 regions of north carolina?
What makes the great barrier reef special?
The Great Barrier Reef is special because it is by far the largest reef in the world. It is consisted of around 2,900 individual reefs. The size of this reef is approximately as the size of Germany. There are over 900 islands that are stretched over 2,600 km along the the reef. The Great Barrier Reef is so marking and big, that even though it is below water it can actually be seen from space. The ecological importance of this reef is enormous as it is a home for thousands of species, with approximately 10% of all fish species in the world living in it. Because of its beauty and numerous attractions, the Great Barrier Reef is one of the most visited tourist destinations, and the Australian economy manages to generate between 5 and 6 billion Australian Dollars annually from it. Unfortunately, all of the human activity has been affecting this reef very negatively, and little by little part of it is dying out.
Explain how convection currents are related to plate tectonics?
The convection currents are what causes the movement of the tectonic plates. These currents occur in the mantle layer. Basically, the convection currents are a circular movement of the magma in the mantle which is cause by the difference in temperature and density. The hotter magma moves up because it is less dense, while the cooler magma moves down because it is more dense. This movement continues all the time. The magma that moves up comes in touch with the crust above it. At certain places where the crust is thinner, or there are cracks, under the big pressure from the mantle, the magma manages to penetrate through it, filling up the gaps, and also pushing the plates away. As the plates are pushed more and more, their opposite ends collide with other plates, resulting in subduction, so the crust is getting into the mantle and melts, moving down in the mantle as it is becoming cooler and denser magma, and the process continues on and on.