Which gas is most abundant in the atmosphere?

A.

argon

B.

oxygen

C.

nitrogen

D.

carbon dioxide

A scientific experiment is repeated, but its results cannot be repeated by others. What can you conclude about the experiment?

Is aluminum abiotic or biotic?

Neville is testing a hypothesis through experimentation. He believes that raising the temperature difference between two water samples will lead to stronger circular currents when the samples are mixed together.

Match each phrase to the form of energy it represents. chemical potential energy electric energy vibrational energy motion energy electric potential energy radiant energy

What type of information is available to scientists through a Global Positioning System

Muscle action that is under your control A. voluntary B. involuntary

When astronauts brought back rock samples from the Moon, the minerals present were mostly the same as those found on Earth.

The lightest wight rocks are found in the

Carbon is an element that is essential for the make up of a) no molecules b) all molecules c) organic molecules b) inorganic molecules

Charlene just said hi what do you think she is thinking