Genetic variations in natural populations develop due to

A. change in the environment

B. random mutation

C. environmental catastrophes

D. change in diet

If a predator has a prey for its diet and something causes the prey population to decrease, what will happen to the population of the predator

If the bronchioles are dilated the anatomic dead space and tidal volume will

Name three types of community interactions that can affect an ecosystem

Which type of animal is most flexible? a. one that is extremely competitive b. one that is a strict niche specialist c. one with a wide fundamental niche d. one with a wide realized niche

Explain how asexual reproduction is different from sexual reproduction.

What is the main difference between a cell nucleus and a nucleoid? A. size of the organelle. B. arrangement of the cytoskeleton C. movement of the flagella D. presence or absence of a surrounding membrane

What is the name of the moon phase

What is the age of viability, and during what weeks does a fetus reach this age?

Who was evolution established by

A student is applying the scientific method to a study of the effect of temperature on plant growth. Each day he writes down the temperature in plant height measurements and a table in his laboratory notebook.