Jill stepped on a tack. which part of the central nervous system caused her foot to move off the tack quickly in a reflex response?

You arrive late to a biological seminar. however, just as you enter the room, you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule. immediately, you know that they are talking about a: ]

Variety of living organisms; includes genetic, species, and ecological types.

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?