What is not true of animals?
a. they develop a blastula.
b. they make their own food.
c. they eat dead or living organisms

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

Witch type of microscope is used to view very small cell components like proteins and dna?

Resperation is a way to release carbon back into the atmosphere