This is the pic.

need filling it in.

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Awolf pack hunts,kills, and feeds on a moose. in this interactions, the moose is a?