I help plz I need help with all also if so answer plz tell me which one u did thx y’all are the real once’s

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?

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

In each transformation of energy , some energy what?