which of the following pairs of terms could be used to describe a bullfrog that is active at night and enters a state of complete inactivity during cold months?

A. cooperation and hibernation
B. aggression and circadian rhythm
C.circadian rhythm and hibernation
D. courtship and cooperation

http://www.sciencedaily.com/articles/c/circadian_rhythm.htm

Which one?

If you know all of the terms mean, you'll know the answer. Read the article I posted.

I think it is C. Am I correct?

Yes. C is right.

which of the following pairs of terms could be used to describe a bullfrog that is active at night and enters a state of complete inactivity during cold months?

A. cooperation and hibernation
B. aggression and circadian rhythm
C.circadian rhythm and hibernation
D. courtship and cooperation

To answer this question, we need to understand the behavior and characteristics of a bullfrog during different periods. Let's analyze each option to determine which pair of terms best describes the described behavior.

A. Cooperation and hibernation: Cooperation refers to working together, which doesn't seem relevant to the bullfrog's behavior. Hibernation, on the other hand, is a state of inactivity during cold months. This choice could be a potential option.

B. Aggression and circadian rhythm: Aggression refers to hostile or violent behavior, which doesn't align with the bullfrog's behavior. Circadian rhythm refers to the biological processes that follow a roughly 24-hour cycle, including sleep-wake cycles. While bullfrogs are active at night, they enter a state of complete inactivity during cold months. Therefore, this choice is not the best fit.

C. Circadian rhythm and hibernation: Circadian rhythm, as explained earlier, relates to the bullfrog's nighttime activity. Hibernation is the state of inactivity during cold months, which matches the given behavior. This choice appears to be the most suitable one.

D. Courtship and cooperation: Courtship refers to the behavior of attracting a mate and engaging in various rituals to initiate reproduction. Cooperation, as previously discussed, doesn't seem relevant to the bullfrog's behavior. Therefore, this choice is less likely to be the correct answer.

Considering the analysis above, option C, "circadian rhythm and hibernation," is the most appropriate pair of terms to describe a bullfrog exhibiting nighttime activity and entering a state of complete inactivity during cold months.