When a female mammal's ova are ready to be fertilized, we say she is in estrus or "in heat."

true
false

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.