This heats the air and water on earth
Trees that shed their leaves when winter approaches
refers to an area's temperature and level of precipitation over a long period of time.
A layer of soil just below the surface of the tundra
The spring and fall ____________________ mark the days when the sun appears directly overhead at the Equator.
The interaction of plant life, animal life, and the physical environment in which they live
The earth's spinning on its axis
A tropical rain forest is one type of
areas with cold, snowy winters and warm or hot summers.
an air mass.
trees carry their seeds in cones.
the condition of the bottom layer of the earth's atmosphere in one place over a short period of time.
The earth completes one ____________________ in approximately 24 hours.
The earth completes one ____________________ in approximately 365 1/4 days.
Low, scrubby trees that grow in Mediterranean climates
The water that falls to earth from the atmosphere
Day and night are nearly the same length at a(n)
Temperatures are always cold in ____________________ regions.
Summer and winter are refered to as