What type of signals does the nervous system send?

What are some things that limit population growth?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

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