Answer:
it is answer A. Layer A is the crust and Layer B is the mantle.
Explanation:
i took the FLVS test
The body needs what in only small amounts, but these organic molecules are an important part in helping perform cellular reactions?
Answer:
Vitamins
Explanation:
Vitamins are the organic compounds that are needed by body in small amounts. Most of the vitamins are not synthesized in human body and should be supplemented with food. Vitamins serve as coenzymes or part of coenzyme which are required for the activity of respective enzymes. Hence, vitamins an important part in helping perform cellular reactions.
50 POINTS, NEED THE ANSWER RIGHT NOW, WILL MARK THE BRAINIEST- During DNA replication, the strand is synthesized in the 5′ to 3′ direction. The strand that runs away from the replication fork is synthesized in because .
Answer:
leading, in fragments, DNA polymerase cannot synthesize to the 3' to 5' direction
Explanation:
I took the test and got all of them right!!!!
Which statements describe earthquakes? Check all that apply.
They release energy.
They are caused by forces.
They begin at the epicenter.
They can lead to massive damage.
They result from movement on Earth’s surface.
They release energy
They are caused by forces
They can lead to massive damage
I think these are the correct answers let me know if I am correct or not.
The shaking of the Earth's surface, taking place due to the sudden discharge of energy in the lithosphere of the Earth, which leads to formation of seismic waves is known as an earthquake. The earthquakes are generally caused when the rocks present underneath gets break abruptly along a fault.
This sudden discharge of energy makes the seismic waves resulting in shaking of the ground. When the two plates or the two rocks gets rubbed against each other, they slightly stick with each other. The sliding does not take place smoothly, and after some time, the rocks get dissociate, resulting in an earthquake. The earthquakes can result in massive destruction depending upon its intensity.
Hence, the correct options are they release energy, they are caused by forces, and they can lead to massive damage.
What helps with asexual reproduction of yeast
Answer:
Asexual reproduction is a method of reproduction for most of single cell organisms including yeast, in this type of reproduction a single parent generates new organism and new one is exact copy of parent both physically and genetically.
In yeast asexual reproduction is carried out by budding, its an asymmetric type of division in which first a protruding body is produced on its surface, it fully grows and forms bud later. When full grown, buds detach from the parent cell and grows independently. Instead of single bud, a chain of buds could also be produced at the surface of yeast.
It has been found that a low moisture level in the environment reduces the activity of microbial enzymes. Explain why the rate of nitrate formation in soil is expected to be lowest during dry summers.
Final answer:
During dry summers, microbial enzymes are less active due to lower soil moisture, leading to reduced rates of nitrate formation as microbial activities like denitrification are slowed down.
Explanation:
The rate of nitrate formation in soil is expected to be lowest during dry summers because microbial enzymes are less active with low moisture levels. Microorganisms, including those involved in the nitrogen cycle, require a certain level of water activity (aw) to grow and perform metabolic functions such as denitrification. Denitrification is a process that reduces nitrate (NO3) to produce nitrogen gases, including nitrous oxide (N2O), which can be a greenhouse gas. However, during dry conditions, soil water content drops, limiting the microbial activity and thus the rate of nitrate transformation.
Soil moisture is crucial for microbial activity and the chemical reactions they facilitate. Bacteria generally require high water activity levels to function effectively. In contrast, fungi can tolerate a broader range of moisture levels. With less water available in the soil during dry periods, bacteria that contribute to denitrification and nitrate respiration are inhibited, leading to lower rates of nitrate formation in the soil. The proper balance of carbon, nitrogen, and moisture is essential for the decomposition process carried out by these soil organisms, which affects nutrient availability for plants.
suppose that for an organism, 2N=8 how many chromosomes do the organism gametes contain
The carrying capacity of an ecosystem describes the maximum number of organisms that can be supported by the water, food, shelter, etc., that is available in that ecosystem.
What will be the most likely result if an ecosystem tries to exceed its carrying capacity?
A.
More houses will be built to shelter people.
B.
The birth rate will increase.
C.
The death rate will increase.
D.
More food will be grown to meet the demand.
The correct answer choice would be C.) The death rate will increase. As the ecosystem's carrying capacity has been reached, more and more pressure is placed on the supplies the ecosystem can supply, eventually causing a collapse, which causes death rates to skyrocket. Hope this helped!
The answer would be C
i just took the test :)
Explain what a zygote is. Use the terms egg cell, sperm cell, and fertilization in your explanation.
fertilization is the process of male sperm cell and female egg cell joining together to form a zygote
which of the following can result in speciation from bio geographic isolation
The effect of geographic isolation is that the two populations are subjected to different selection (pressures) and geographic conditions. The conditions in the two areas, if different, will produce different alleles in that species and will be selected for, where genetic differences will gradually accumulate between the two different populations.
In time, enough genetic differences will occur so that the two populations will no longer interbreed. Then, by definition, they have become different species.
In which of the following processes is chemical energy converted to mechanical energy
True or False? The actual neutron of a technetium atom is physically different than a neutron of a helium atom.
Mutations within an organism can occur in body cells or reproductive cells. Which type of mutation is seen in a sperm cell but not in a skin cell?
A. somatic mutation
B. missense mutation
C. nonsense mutation
D. germline mutation
The answer is:
D. germline mutation
Hope it helps!
Answer:
D. Germline Mutation
Explanation:
It is Germline because Germline usually occurs in the Gametes. It is not Somatic because somatic could be a disease like cancer.
what is An autotrophic protist, such as an algae or diatom I NEED ANSWER ASAP GIVIN 90 POINTS
Answer: Protist
Explanation:
Answer:
Protist is the answer
Explanation:
Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate K-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth
Answer:
1: species that are adapted to live in equilibrium at carrying capacity
K-selected
There are two types of specie based on the strategies they use for the reproduction, growth and survival. K and r selected species. The alphabet K simply indicate the carrying capacity or the number of individuals that can be supported by the habitat and available resources.
Some important traits of K selected organisms include: Low reproductive rate,Low offspring mortality, Strong competitive ability, Good parental care,Limited offspring dispersal and Strong competitive ability.
2. population growth that reaches equilibrium and carrying capacity population
logistic growth
Logistic growth is the type of growth pattern in which when the population reaches carrying capacity the growth rate of the population decreases. Carrying capacity is the highest number of organisms of a population that the environment can support.
3. death rate
Mortality or mortality rate is typically expressed in terms of deaths per 1,000 individuals per year; so, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total.
4. birth rate
natality
Birth rate or natality is simply indicative of number of individuals born per thousand of population per year.
5. a group of interacting individuals of the same species within the same geographic area
population
For example, a population of sparrows living on a certain area make a population of that area.
6. the number of organisms living in a particular area
population density
Population density is indicative of the number of population per unit area. For example: If there are 2000 human population living in an area of 25 sq km, the population density will be population divided by area, that will be equal to 80.
Compare primary and secondary pollutants. Which is more harmful ?
your answer is correct
Both WOULD be equally harmful. Primary pollutants are pollutants that are directly emitted from a pollution source. Secondary pollutants are created as a result of interaction in the atmosphere of primary pollutants. Primary pollutants can be as harmful as secondary pollutants. Therefore your answer is correct.
what is genetically modified food?
a) food needed to fuel transformations in genes.
b) a food product with only its own intact genes.
c) food that is only grown in a lab using biotechnology.
d) a good product with genes that have been changed.
Genetically modified food is food produced from plants or animals whose DNA has been altered through genetic engineering. These genetically modified organisms are often called GMOs for short.
d) a food product with genes that have been changed.
What molecular conformation (structure) of homologous chromosomes facilitates crossing over?
tetrad
meiosis II
triads
mitosis
The molecular conformation that facilitates crossing over is: tetrad.
Homologous chromosomes form tetrads composed of four sister chromatids. These chromatids are then able to cross over.
This happens during the stage of Meiosis I - in Meiosis II the tetrad has already split into pairs of sister chromatids.
The tetrad structure of homologous chromosomes facilitates crossing over during meiosis, promoting genetic diversity.
Explanation:The molecular conformation of homologous chromosomes that facilitates crossing over is the tetrad structure. During the Prophase I of meiosis, homologous chromosomes pair up and form a structure known as a tetrad, which consists of four chromatids. The formation of tetrads is crucial for crossing over as it provides a physical basis for the chromosome to exchange genetic material. This process of crossing over results in recombination of genetic material, enhancing genetic diversity.
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The majority of Earth's atmosphere is nitrogen, N2. The percentage of nitrogen in Earth's atmosphere remains constant as prescribed by the law of conservation of matter and because it is a reasonably non-reactive gas. Like carbon, nitrogen is cycled through Earth's spheres. However, nitrogen can be converted into forms usable by plants and animals, either by lightning or bacteria. Once converted to usable forms, nitrogen is able to cycle the rest of the way through the ecosystem. Much like carbon, the recycling of nitrogen through Earth's spheres relies heavily on what type of organism? A) autotrophs B) decomposers C) parasites D) producers
decomposers The principal forms of decomposer are bacteria and fungi.
Decomposers act as recyclers in many biogeochemical cycles. Decomposition occurs when a compound is broken down into simpler compounds or into its constituent elements. This is achieved primarily by decomposers, organisms that obtain their energy from the chemical breakdown of dead organisms as well as from animal and plant waste products.
Final answer:
The recycling of nitrogen through Earth's ecosystem heavily relies on decomposers, as they break down organic matter and return nitrogen to the soil in a usable form for plants.
Explanation:
The recycling of nitrogen through Earth's spheres relies heavily on a specific type of organism. These organisms are decomposers. Decomposers break down organic matter, which includes the bodies and wastes of organisms, recycling the nitrogen contained within them back into the ecosystem in a form that plants can use. As part of the nitrogen cycle, these decomposers play a crucial role, alongside other processes such as nitrogen fixation by bacteria and lightning, to convert nitrogen into a usable form for living organisms.
A scout on a hike becomes lost. He does not have a compass, but he does have a small needle, a magnet, and some water. He magnetizes the needle and then gently places it on the surface of the water, where it points to the north. What property of the water makes it possible for the needle to lie on the surface of the water?
A. viscosity
B. definite volume
C. surface tension
D. boiling point
Answer:
C. surface tension
Explanation:
Surface tension refers to the property of water or any liquid to enhance its surface area by a certain amount. It is a very important property of water due to which it resists any external force due to cohesive nature of water molecules.
How surface tension help needle to float on water:
It is a property of water which enhance the attractive force between needle and liquid.
The molecules on the surface of water do not have any force acting from upwards because that side is exposed to atmosphere. This causes a downward force but no upward force on upper surface,so the molecule of surface tend to stay together by forming a thin sheet or imaginary layer.
If weight of any material cannot break surface tension it will float on water surface. This is what happens with needle.Therefore, when needle is placed on water surface with alot of care in horizontal direction, it will not break surface tension and hence will float on water. Please see attached image for better understanding.
Hope it clears up the picture!
Which is a biotic element found in the tropical rain forest biome
Abiotic factors (non-living things) in a tropical rainforest include temperature, humidity, soil composition, air, and many others. A few of the many biotic factors (living things) in that forest are toucans, frogs, snakes, and anteaters. All of the biotic factors are dependent upon the abiotic factors
Answer:
Plants
Explanation:
Abiotic factors in the rainforest are any living thing, including rainforest animals, plants, insects, fungi, and microorganisms. These aren't to be confused with abiotic factors, which are non-living things.
consider the stage of cellular respiration that is shown in the diagram.
what is the net ATP production at this stage of cellular respiration?
A) 2ATP
B) 4 ATP
C) 32 ATP
D) 36 ATP
I wanna say D, but I’m not entirely sure
which food would give the strongest positive test for lipids
The brown paper test for lipids is positive when food is placed on the paper and a spot forms that will allow light to pass through it. Which food would give the strongest positive test for lipids? The answer is The brown paper test for lipids is positive when food is placed on the paper and a spot forms that will allow light to pass through it. Which food would give the strongest positive test for lipids? The answer is Potato chips
A food high in fat, such as butter or olive oil, would yield the strongest positive test for lipids because they are high in lipid content. A solution like the Sudan III stain can be used to visually identify the presence of lipids in a food source.
Explanation:A food that would give the strongest positive test for lipids would be one that is high in fat. For instance, butter or olive oil would yield a strong positive result because they are both very high in lipids.
In a lab, this can be tested using a solution such as the Sudan III stain, which binds to fats and can be visually seen if fat is present. If the solution turns a red color, that indicates the presence of lipids. Given the high lipid content in butter or olive oil, these would react strongly to the solution, indicating a high amount of lipids.
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a characteristic that distinguishes most plants from animals is
A.means of locomotion
B.chloroplast
C.symmetry
D.color
B. Chloroplast
A chloroplast is an organelle found in the cells of green plants, it basically turns the plants green, animals do not have chloroplasts.
Answer:
chloroplasts
Explanation:
Explain the difference between a qualitative property and a quantitative property.
Quality means the standard of something as measured against other things of a similar kind, while quantity means the amount of something.
Qualitative properties are descriptions of qualities (like color or texture) that cannot be measured with numbers, while quantitative properties are measurable characteristics expressed numerically, often with units (like count or measurements).
In science, a distinction is made between qualitative and quantitative properties. Qualitative properties describe characteristics that cannot be measured with numbers but are observed as qualities, such as color, texture, or taste. For example, descriptions such as sulfur being yellow, a book being heavy, or a statue being beautiful are all qualitative in nature.
Quantitative properties, on the other hand, refer to characteristics that can be measured and expressed numerically, often with units. Examples include counting or measuring to determine that there are 25 students in a class, a book has 650 pages, or an object has a velocity of 66 miles per hour. Quantitative measurements are particularly useful in scientific research as they provide precise and analyzable data.
this is the study of the vital statistics of a population and how they change over time
the answer is demography
Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. of the remaining energy, some is used for the organisms life processes and the rest is...
The rest is eliminated as heat.
Answer:
D
Explanation:
Eliminated as heat
The type of heat transfer that causes material in the earth's interior to move is called
Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This hot added material cools down by conduction and convection of heat.
Convection is the type of heat transfer that causes material in the Earth's interior to move, affecting the movement of tectonic plates.
The type of heat transfer that causes material in the earth's interior to move is known as convection. This process involves convection movement within a gas or liquid, driven by the tendency of hotter, and therefore less dense material, to rise while colder, denser material sinks due to gravity. This results in a transfer of heat. In the Earth's mantle, this movement forms convection cells that drive the movement of tectonic plates. Hotter and less dense mantle material heated above the core rises towards the surface, cools, and then sinks back down at places such as deep sea trenches, completing a convection cell and perpetuating the cycle of heat transfer.
What aspects of gas giants is most responsible for their low temperatures
Answer:
Their distance from the sun
Explanation:
Temperatures on gas giants are low because they are at a great distance from the sun and do not endure as much energy as terrestrial planets. Besides, of all the gas giants, Jupiter is closest to the sun; in contrast to Neptune, which is the furthest from the sun and has the longest period of revolution.
primary succession begins after
a?
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited.
Answer: a new volcanic rock
Explanation: Primary succession is a a type of ecological succession in which change in vegetation which occurs on previously unvegetated region. Examples of where primary succession may take place include the newly developed islands, new volcanic rock, and on land formed from glacial retreats.
What is the greenhouse effect
Answer:
The greenhouse effect is a natural process that occurs due to the accumulation of greenhouse gases such as carbon dioxide, ozone, methane in the earth's surface.
Explanation:
The greenhouse effect is a phenomenon that occurs when the greenhouse gases(carbon dioxide, methane) in the Earth's surface trap heat from the sun and this process makes the Earth's surface warmer.
The greenhouse effect is caused due to burning of fossil fuels and cutting of trees or forests, which increase the concentration of methane, carbon dioxide(greenhouse gases).
The greenhouse effect is a natural mechanism that raises the temperature of the Earth's surface. It occurs when specific gases in the atmosphere capture solar radiation.
The greenhouse gases allow sunlight to enter the atmosphere while trapping heat reflected from the Earth's surface. This trapped heat raises the temperature of the Earth's surface and lower atmosphere.
Its effect is necessary for life on Earth to exist. The average temperature on Earth would be around -18 degrees Celsius (-0.4 degrees Fahrenheit) if the greenhouse effect did not exist.
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