Carbon makes up part of all life forms on Earth. The human body, for example, is about blank % carbon.

There are main groups in the modern periodic table of elements

One nanometer is equal to how many meters?

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.