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QveST [7]
3 years ago
10

How is modern earth different from earth over 4 billion years ago?

Biology
1 answer:
igor_vitrenko [27]3 years ago
5 0

Earth and its atmosphere are continuously altered. Plate tectonics shift the continents, raise mountains and move the ocean floor while processes not fully understood alter the climate. Such constant change has characterized Earth since its beginning some 4 billion years ago.

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List the distribution of earths water from the greatest amount to the least amount
GuDViN [60]

Answer:

The distribution of water on the Earth's surface is extremely uneven. Only 3% of water on the surface is fresh; the remaining 97% resides in the ocean. Of freshwater, 69% resides in glaciers, 30% underground, and less than 1% is located in lakes, rivers, and swamps.

Explanation:

4 0
3 years ago
True or false: Theoretically, it is possible (but very difficult) for a population to not evolve for a while.
Debora [2.8K]

It is true that it is possible for a population to not evolve for a while.

There is something called the Hardy-Weinberg theorem, which characterizes the distributions of genotype frequencies in populations that are not evolving.

There are 5 Hardy-Weinberg assumptions:

  • no mutation
  • random mating
  • no gene flow
  • infinite population size
  • and no selection (natural nor forced).

You can see that some of these are kinda extreme and really hard to get, but with approximations, we can work.

For example, instead of an "infinite population size" we have enough with a really large population, such that genetic drift is negligible.

Concluding, yes, it is possible (but really difficult) for a population to not evolve for a while (at least, in nature), as long as the 5 assumptions above are met.

If you want to learn more, you can read:

brainly.com/question/19431143

7 0
3 years ago
NEED HELP ASAP!! Which arrows on the diagram below represents differentiation of cells? THANKS!!
Llana [10]

Answer:

D. Arrow d

Explanation:

I hope this is helps you

5 0
2 years ago
Chemical bonds that involve the total transfer of electrons from one atom or group of atoms to another are called
77julia77 [94]
These are called ionic bonds
7 0
3 years ago
The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the __
kotykmax [81]
The correct answer among the choices listed above is option D. The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the placenta. Hope this answers your question. God Bless.
8 0
3 years ago
Read 2 more answers
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