Scientists divide the atmosphere into how many layers?

four

seven

five

eight

If someone takes their achilles tendon what kind of tissue is that?

Which statement is true regarding active transport? Group of answer choices Substances can move from areas of low concentration to areas of high concentration Substances can only move into cells, not out of cells Substances do not require additional

Why are blood cells differennt from skin cells

Compare and contrast the reproduction of mosses, ferns, gymnosperms and angiosperms

What factor made evolution more very slowly for the first two billion years of life on earth?

Which is the most suitable purpose for using a globe? A. finding the Mississippi River B. seeing a town in North Dakota C. searching for the best route from New York to Los Angeles D. seeing the whole earth

The oldest forensic laboratory in the US was built by whom? Los Angeles Police Department Boston Police Department New York City Police Department Chicago Police Department

Which could be a reason viruses are considered nonliving things? Viruses come from cells. Viruses produce cells. Viruses are made of DNA and proteins, but not cells. Viruses attack cells and are dangerous to them.

How do humans become murderers? What are some of the reasons that cause it?

Relate sexual reproduction to evolutionary forces