Which one of the following statements is true for species-specific signals?
a. they’re specifically used by more complex animals.
b. they must be learned through experience.
c. they produce a relatively uniform response in receivers.
d. they work only in interspecific communication.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

How can you tell the difference between rough er from smooth er?