Over the Course of Millions of Years Various Environments Have

question 19

Multiple Choice

Over the course of millions of years various environments have changed.As grasslands slowly took the place of forests the inhabitants were forced to adapt or they went extinct.During this time period the horse evolved from a small cat sized creature to the size of the modern horses we see today.This is an example of which type of natural selection?

• A)Directional
• B)Disruptive
• C)Stabilizing
• D)The horse did not undergo any type of Natural Selection during the course of its evolution.
• E)The horse has not been on the Earth for millions of years.

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Definitions:

IgD

A class of immunoglobulins that primarily exists on B cell surfaces, acting as an antigen receptor.

Allergic Reactions

Immune system responses to a foreign substance that is not typically harmful to the body, like pollen or pet dander.

Anis/o

A prefix meaning unequal or dissimilar.

Eosin/o

A prefix relating to eosinophils, a type of disease-fighting white blood cell, often associated with allergic reactions and infections.