Scientists performed many experiments on the Challenger. These experiments did NOT include

deep sea trawling
bottom sampling
water analysis
sonar soundings

Keywords are the significant words or phrases that define the topic of an essay question. A synonym on the other hand is a word or phrase that means exactly or nearly the same as another word or phrase

The statement that a synonym for a word may be included as a keyword is true, because using synonyms will get you a more complete set of search results.

The correct answer is - D. Europe and Asia.

Eurasia is the geographic term used for Europe and Asia. This is because the two continents, are actually, by geographic terms, not two separate continents, but represent one whole because both of them lie on the same tectonic plate, the Eurasian tectonic plate. It is the only continent in the world that is divided because of political, cultural, religious, and racial reasons.

Answer:

About 2.5 centimeter per year

Explanation:

At the divergent boundaries the earth lithospheric plates moves away from each other . This occurrence might be in the continental plate/crust or oceanic plates/crust. The divergent boundary can be noticed in the middle of an ocean . This is the type of boundary occurring in the Atlantic ocean. The diverging rate at the Atlantic ocean is very slow at about 2.5 cm per year. The plates are moving away from each other thereby causing the up-welling of magma to create a new oceanic crust.  The divergent boundary on the ocean floor like Atlantic ocean is usually found on the crest of the mid oceanic ridges. The boundary is also marked by shallow earthquakes and faults.

The correct answer is - temperature.

We see the stars on the night sky in multiple colors, and the variation in the colors of the stars comes from the differences in temperature. The cooler a star is, the more reddish it appears, the hotter the star is the more blueish or whitish they appear. From cool to hot, the stars can appear in the variations of red, orange, yellow, green, blue/white colors, and it is an easy indicator of the temperature of them.

Answer:

Peak Wavelength

Explanation:

Stars appear to emit only one color (The one we see) but is not true, the stars emit light that varies from Ultra Violet radiation to Infrared Radiation, the visible color depends on the wavelength with the most intensity called Peak Wavelength, this wavelength depends entirely on the temperature of the star if the stars are blue the wavelength with most intensity is the Short wave ( Hotter) different from a Red star, which Wavelength would be longer (Colder).

It's not d guys I put that and got it wrong its C

The three major types of economic systems taught in this course are market, command, and traditional.

The three major types of economic systems taught in this course are Market, Command, and Traditional.

In a Market economic system, resources are owned and controlled by individuals and businesses, and decisions on what to produce, how much to produce, and at what price are influenced by supply and demand.

In a Command economic system, resources are owned and controlled by the government, and decisions on what to produce, how much to produce, and at what price are made by the government.

In a Traditional economic system, resources are allocated based on customs, traditions, and beliefs, and economic decisions are often influenced by cultural and societal norms.

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London is east of Paris. " The statement is false. because London is located nearly North West side to Paris. The bearing degree from Paris To London is 329 ° degree.

East rotates away from north in a clockwise motion. East is exactly across from west. If the general time of day is known, east and west can be determined from the location of the sun in the sky. The sun rises in the east and moves upward in the morning. It roughly sets in the west in the evening.

East rotates away from north in a clockwise motion. East is exactly across from west. If the general time of day is known, east and west can be determined from the location of the sun in the sky. The sun rises in the east and moves upward in the morning. It basically sets in the west in the evening.

Therefore, The statement is false. London is west of Paris.

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Answer:

I have this on an open-book test so the person above me helped me . It was the Ozark Highlands! :)

Explanation:

The most urgent problems for the US include fiscal difficulties, crowding in cities, aging pollution, and environmental challenges like air and water pollution, as well as the strain on healthcare systems due to an aging population, increased energy costs, and a lack of skilled labor.

The most pressing issues that the United States faces today revolve around a variety of socio-economic and environmental challenges. These include fiscal difficulties related to the costs of public services and infrastructure, crowding in urban areas leading to housing shortages and traffic congestion, and environmental concerns such as air and water pollution that threaten public health and ecological balance. Furthermore, the United States is coping with the implications of an aging population, which places a strain on pension systems and healthcare, particularly on programs like Medicare. Illegal immigration remains a contentious issue, affecting labor markets and public policy. The nation also confronts the issues of increasing energy costs and the challenge of securing sufficient energy supplies without exacerbating environmental issues such as global climate change and acid rain.

With the world's population 'graying', an increasingly pressing problem is the burden on social services and healthcare systems due to the rising number of older citizens. Another aspect that's impacting the labor market in the U.S. is the lack of skilled labor, which can hamper economic growth and technological advancement. Additionally, concerns over a potential shortage of natural resources further complicate long-term sustainability and economic stability.

Collectively, these factors outline a complex web of issues that require thoughtful and proactive policymaking to ensure societal well-being and environmental sustainability.

Answer:

b. troposphere.

Explanation:

   The troposphere is the lowest layer of the earth's atmosphere, being the region in which we live and where meteorological phenomena occur.

   Its height varies with the point away from the surface. At the poles, for example, it reaches 7 km altitude and 16 km in the Ecuador region.

    It is in the troposphere that rain, lightning, clouds and air pollution occur.

    The meaning of troposphere comes from the Greek "tropos" and means change.

The chemical composition of the troposphere is as follows:

    Oxygen - 21%

    Argon - 0.9%

    Water vapor - 0.4%

    Carbon Dioxide - 0.04%

    The troposphere concentrates most of the water vapor from Earth's atmosphere. The amount of vapor results from the process of evaporation and transpiration of the earth's surface.

Final answer:

Panama is indeed located between South America and North America, connected by the Isthmus of Panama and bordered by the Caribbean Sea and the Pacific Ocean.

Explanation:

The statement "Panama is located between South America and North America" is true. The Isthmus of Panama is the narrow strip of land connecting the two continents, with Costa Rica to its northwest and Colombia to its southeast. Panama serves as a land bridge between North and South America and is bordered by the Caribbean Sea to the north and the Pacific Ocean to the south. This strategic location played a significant role in history, particularly during the colonial period when the region was controlled by colonial Colombia, and later in the construction of the Panama Canal, which significantly shortened maritime travel times by allowing ships to pass between the Atlantic and Pacific Oceans without circumnavigating South America.

The ability to identify where you are, that is locating your space and evaluating it in relation to someplace else, is known as spatial analysis. This ability will help you better to understand where and what is occurring in your world, but also to solve  location-oriented problems and answer complex spatial questions.

Indonesia is located to the northwest of Australia, but it is not entirely north of Australia. Thus, the given statement is false.

The majority of Indonesia lies to the north of the equator, while Australia is situated entirely in the southern hemisphere. Geographically, Indonesia is a neighboring country to the north of Australia, separated by the Timor Sea and the Arafura Sea.

The closest point between the two countries is the Indonesian island of Timor, which is located to the northwest of Australia. Therefore, stating that Indonesia is north of Australia would be inaccurate.

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The Answer is:

The Earthquakes happened a century before the collapse of the civilizations

Using trigonometry and the tan function, we calculate that the distance from the tip of Adam's shadow to the top of his head is approximately 76.22 inches.

To determine the distance from the tip of Adam's shadow to the top of his head, we use trigonometry involving right-angled triangles. Specifically, we can utilize the tan function which is defined as the opposite side over the adjacent side in a right-angled triangle. Given that the angle of elevation is 60° and Adam's height is 5'6" (which is 66 inches), we can set up our equation based on the tan function.

The tan of 60° equals the height of Adam (opposite side) divided by the length of the shadow (adjacent side). As tan(60°) = √3, and the height of Adam is 66 inches, we get √3 = 66 / length of shadow. Solving for the length of shadow, we find it equals 66 / √3 inches. To find the distance from the tip of the shadow to the top of Adam's head, which is the hypotenuse in this scenario, we use the Pythagorean theorem or recognize the special 30-60-90 triangle ratio.

In a 30-60-90 triangle, the hypotenuse is twice the length of the shorter side (which here is the shadow's length). After calculating, we find the length of the shadow to be approximately 38.11 inches, making the hypotenuse (distance from the tip of the shadow to Adam's head) approximately 2 x 38.11 = 76.22 inches.

The distance from the tip of Adam's shadow to the top of his head is approximately 3.18 feet.

To solve this problem, we can use trigonometry and the concept of similar triangles.

First, let's define the variables:

- Let (h) be the height of Adam (from the ground to the top of his head).

- Let [tex]\( d \)[/tex]  be the distance from the tip of Adam's shadow to the top of his head.

- Let[tex]\( \theta \)[/tex] be the angle of elevation from the tip of the shadow to the sun (given as [tex]\( 60^\circ \)[/tex]).

Now, we can set up a proportion using the tangent function:

[tex]\[ \tan(\theta) = \frac{h}{d} \][/tex]

Given that [tex]\( \theta = 60^\circ \)[/tex], we have:

[tex]\[ \tan(60^\circ) = \frac{h}{d} \][/tex]

[tex]\[ \sqrt{3} = \frac{h}{d} \][/tex]

Now, we need to find the length of Adam's shadow. Since Adam is 5'6" tall, and his shadow is formed by the sun's rays, which are nearly parallel, the length of his shadow is directly proportional to his height. Thus, if Adam is 5'6" tall, his shadow will also be 5'6" long.

Using the proportion [tex]\( \frac{h}{d} = \sqrt{3} \)[/tex], and substituting [tex]\( h = 5.5 \)[/tex]feet (since 5'6" is 5.5 feet), we can solve for ( d ):

[tex]\[ d = \frac{h}{\sqrt{3}} = \frac{5.5}{\sqrt{3}} \approx 3.18 \text{ feet} \][/tex]

So, the distance from the tip of Adam's shadow to the top of his head is approximately 3.18 feet.

The complete ques is :

Adam, who is 5'6" tall, notices his shadow on the sidewalk. If the angle of elevation from the tip of the shadow to the sun is 60°, what is the distance from the tip of the shadow to the top of his head? (round to 2 decimal places)

The correct answer is your second option: Rainfall gradually diminished and areas that were once grassy and forested became deserts.

The climate and geography of North Africa changed significantly between 10,000 B.C. and 1000 B.C., with cooler temperatures and reduced rainfall leading to increased aridity and desert expansion.

Between 10,000 B.C. and 1000 B.C., the climate and geography of North Africa underwent significant changes. Cooler temperatures and reduced rainfall led to increased aridity and the expansion of deserts. Grassy and forested areas transformed into deserts as plant and animal communities shifted in response to the changing climate.

Answer:

b

Explanation:

Acid rain is a expression for the more scientific term, acid deposition, which refers many ways in which acidity can move from the atmosphere to Earth's surface. Acid deposition includes acidic rain as well as other forms of acidic wet deposition—such as snow, sleet, hail, and fog.

Sorry, this answer is late I hope this gets to another person from this question.

Acid deposition refers to all the types of precipitation namely acid rain, acid fog and acid mist that imply both dry and wet precipitation.

While  

Acid rain is defined as the rain or any other kind of precipitation that is acidic or it has a high level of hydrogen ion of low pH value.

Further Explanations:

Acid rain includes all types of precipitation with acidic content with a pH value less than 7. These types of precipitation are harmful for the aquatic animals and their infrastructure. Acid rain is the result of the reaction of Sulfur dioxide and Nitrogen oxide with water molecules present in the atmosphere. Efforts are being made by the government to reduce the emission of these gases for a positive result. Acid rain can be a result of a natural phenomenon also. Thunderstorms and lightning also produce Nitrogen oxide while Sulfur Dioxide is produced during the volcaniceruption. Both natural phenomenons are also responsible for acidic precipitation.

Acid deposition refers to all kinds of precipitation, smog, fog, and mist that have acidic content in it. Deposition can be dry or wet, but in all states, it is hazardous for the environment. The deposition generally hasa pH value of less than 4 and can have pH value as a minimum of 1.5.Sulphuric acid and Nitric acid are two components generally found in the deposition.

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Answer Details

Grade: High School

Subject:Geography

Chapter: Acid Rain

Keywords:Acid rain, pH value, aquatic animals, Sulfur dioxide, Nitrogen oxide, Thunderstorms, volcanic eruption, acidic precipitation, precipitation, smog, fog, and mist