26. Movement of a molecule against a concentration gradient is          SLO C4

24. Most of the functions of plasma membranes are carried out by __________.   SLO C1

The Earths magnetic field protects us from solar wind.

4. This is the regulation of body conditions within normal limits.             SLO H5

The ecliptic plane is the plane in which the Earth revolves around the sun.

The fact that all the planets orbit the Sun in the same direction is strong evidence that

General inflammation of a joint cavity is called:

The phases of the Moon occur because

The atmospheres of Earth are thought to have erupted from the interiors of the planet itself.

The cores in the terrestrial planets are thought to be made out of gas.