The levels of biological organization for most multicellular organisms

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

How does the viscosity of magma change as magma cools?

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car