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

cooperation and hibernation
aggression and circadian rhythm
circadian rhythm and hibernation
courtship and cooperation

I am thoroughly entertained.

shush ^

I'll be happy to check your answer.

I believe you are correct....

Usually, I'm pretty good with questions like this....I'm not really sure about this one.

No. D is wrong. Please look the definitions of unfamiliar words.

* look up the definitions

Then if it is not D then I believe it is A?

Please stop guessing!

Well, shouldn't these terms be in your science book or something?