What is the first defense the body has against a virus?

O

A. Mucus

O

B. T cells

O

C. Lymphocytes

O

D. Macrophages

How are genes and proteins similar to homologous structures when determining evolutionary relationships among species?

During expotential growth, the rate of growth? a. declines consistently over time b. remains steady over time c. starts quick and then levels off d. starts slowly and then accelerates

Which of the following terms describes all of the non-living components of an ecosystem?

List three characteristics that are used to describe a population

What processes lead to glacial erosion? Describe them.

If a species is suddenly introduced into a new habitat, what might occur?

Brainliest hurry timed! How many groups did Aristotle use to divide all of the organisms in the world? 1 2 3 4

Carl wants to find out how exercise affects the body temperature of different people. What tool will Carl need in order to conduct his experiment?

3 How does rain form? Water rises, cools, evaporates, and then condenses. Water cools, condenses, evaporates, and then rises. Water evaporates, cools, rises, and condenses. Water evaporates, rises, cools, and then condenses.

Which are biotic factors in an American alligator's environment? Choose all answers that are correct. A. temperature of the water B. amount of oxygen gas in the water C. type of grass needed for nests D. number of available mates