In surfing, why does crouching down you remain stable?
a) it lowers your center of gravity
b)it raises your center of gravity
c) it doesn't really, it just seems that way psychologically
d) your average mass decreases

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.