What conditions will produce rocks with crystals

Most of the heat in the human body is generated within mitochondria ... what is occuring in them and why does it produce heat?

Since the nucleus of an atom is so far away from the electron shells around it, an atom is made mostly of which of the following?

Scientists consider the "resting" phase of the cell cycle because they can't see a visible change during this phase.

Describe the pathway of blood through the kidney

What is the primary difference between a hypothesis and a theory?

Who was the first person to look at living cells using a microscope

What organelle is most specialized?

What is the body of a sponge is covered with many small opening?

Population Growth Which of the following refers to the movement of individuals out of a particular area? A. Immigration B. Emigration C. Transporting Population growth is a big concern for ecologists.

How does a caterpillar get it's energy?