Information in the environment that causes an animal to react is

A. a control.

B. an interneuron.

C. a response.

D. a stimulus.

What is a mass extinction? How many have occurred in the last 600 million years?

A mushroom's role in the ecosystem is as a a. population. b. producer. c. decomposer. d. plant.

A red-eyed fly mates with a blue-eyed fly. the offspring all have red eyes. what is the dominant trait?

if two different alleles for a trait are present and one allele doesn't entirely block the expression of the other, the genetic situation is called A. Recessive B. Co-Dominance C. In-Complete Dominance D. Purebred

According to the usda food patterns, which protein food should be most limited? eggs skinless chicken peanut butter baked beans

The most famous pioner colonial times

Can a theory change over time? If so, how?

Which of the following needs a host to reproduce? 1) all of the above 2) eukaryotic cell 3) none of the above 4) prokaryotic cell 5) virus

Suppose that two ancient types of plants, one that grows in the winter and one that grows in the summer, appear together in the fossil record for two periods in the geologic time scale.

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