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bezimeni [28]
3 years ago
9

Mechanism of macroevolution works by __________. a. appearing in the fossil record of species with similar morphologies. b. weak

ening of barriers to reproductive isolation. c. continuation of gene flow between populations. d. multiple acts of speciation on an ancestral organism.
Biology
1 answer:
Marta_Voda [28]3 years ago
6 0

Answer:

D

Explanation:

Mechanism of macroevolution works by multiple acts of speciation on an ancestral organism.

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A change in their food, from trees to grass in the Great Plains.

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If nondisjunction occurs during meiosis,
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If you repeatedly hold your breath for as long as you can, this could lead to which of the following? (choose all correct answer
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Place the following materials in the order in which they are likely to fossilize. Begin with the material that is most likely to
marusya05 [52]

Answer: correct order--->

1)mammal teeth

2.)bones of an adult mammal quickly buried

3.) bones of an adult mammal left on the surface

4.)soft body parts of any animals

Explanation:

Fossilization is the ability of an organism to be preserved and remain unaltered for a very long time. Through research , it has been found out that Harder  parts of the body tend to remain preserved for a long time  because they  naturally have minerals deposited in them and may only be reduced,  but the softer part or tissues do not get preserved for a long time because being made up of polymer can be disintegrated easily by natural biological and physical processes.

The order of which material will likely fossilize is

1.)mammal teeth

2.)bones of an adult mammal quickly buried

3.) bones of an adult mammal left on the surface

4.)soft body parts of any animals

Reason,

--Teeth and bones biologically contain calcium but the teeth is more tougher and durable than the bone, Even when a  body is decomposed, the teeth most times are not  affected at all.

Bones of an adult mammal left on the surface will decompose faster than the one buried because of the biological (natural decomposing ) and physical processes(temperature, wind, sunglight, rainfall ) which will both act on it at the same time because of its exposure.

- soft body parts of any animals will decompose fastest as bacteria will feed on it immediately since it lacks minerals that can elongate preservation.

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Answer:

Sexual Reproduction

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