Match each element with the number of atoms found in one molecule of this compound: C5H7N (nicotine)

1. carbon

five

2. hydrogen

one

3. nitrogen

seven

Orange roughy fish are a fourth-level consumer. We may see fifth - or sixth-level consumers, but not as many as at lower levels on a trophic pyramid. Why are the upper levels of a tropic pyramid limited?

Lesson Name: Animal Systems and Behavior

An organism on which a parasite or virus lives is called a

Correctly order the steps in which blood travels through the heart from the time it enters from the systemic circuit until it returns to the systemic circuit.

Does Darwin's theory of Nature selection explain how evolution occurs?

A mother sleeping in the middle of the night nevertheless responds when she hears her 2-year-old daughter crying in the adjacent bedroom. This indicates that the mother possesses:

How can farmers keep topsoil on their land? check all that apply. a. close their gates b. keep plants growing c. plant trees to shield fields from the wind d. do not plow when extremely heavy rains are expected?

Measures how much matter is present in a substance

How is artificial selection similar to natural selection?

Which of these is a distinguishing characteristic of terrestrial habitats? O A. Plant life O B. Presence of oxygen O C. Salinity levels O D. Human presence