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marissa [1.9K]
3 years ago
14

Which ecosystem is more healthy, tundra, grassland, or desert? why?

Biology
1 answer:
Kamila [148]3 years ago
4 0

Answer:

Grassland

Explanation:

Healthy grasslands are important habitats for birds and other wildlife, and also places where we farm and ranch. They provide food, cover, space and safe access to water for both wildlife and livestock.

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PLS HELP
Sav [38]

when changes in a protein appear to accumulate at a constant rate over time is called option (c) i.e, Molecular clock.

<h3>What does molecular clock mean?</h3>

The term "molecular clock" refers to a method that estimates the time in prehistory when two or more life forms diverged by analyzing the mutation rate of biomolecules. Typically, nucleotide sequences for DNA, RNA, or amino acid sequences for proteins serve as the biomolecular data for these calculations.

Hedges, a biology professor at Penn State, claims that the molecular clock counts the mutations that accumulate through time in the gene sequences of various species rather than counting seconds, minutes, and hours.

Mutation and recombination, the two fundamental biological processes that give rise to all heritable variations, are the foundation of molecular clocks. Mutations are modifications to the genetic code of DNA, for as when the nucleotide Guanine (G) turns to Thymine (T).

To know more about molecular clocks refer to:  brainly.com/question/8597562

#SPJ1

7 0
2 years ago
Plzzz....someone ....Diffusion
Taya2010 [7]
The meaning of diffusion is the movement of the molecules reign from high concentration to a low concentration reign. As a result, there is a random motion between the atoms and molecules.
Hope this helps :)
7 0
3 years ago
IN YOUR OWN WORDS what is the definition?
sweet-ann [11.9K]

Answer:

Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.

Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes.

Anaphase is the stage of mitosis and meiosis in which the chromosomes move toward the poles of the spindle.

Telophase is the final stage of mitosis and of the second division of meiosis in which the spindle disappears and the nucleus reforms around each set of chromosomes.

Cytokinesis is the division of cells after either mitosis or meiosis I and II.

Explanation:

4 0
3 years ago
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Complete the analogy below.
liraira [26]
D) excessive irrigation
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Speciation without geographic isolation is called ________ speciation.
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The answer is A. Sympatric
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