Remember that the _________ of an area is its distance
north or south of the equator.
Other trees, called
_________, do not lose all of their leaves at once. (336)
A large area with a certain
climate and types of organisms is called a _______.
A ________ is an area that receives less than 25 cm of
rainfall per year. Deserts are the driest places on Earth. (333)
_________ regions have cool, wet winters and hot,
dry summers. (337)
The climate zone between the tropical and the polar
zones is the __________ zone. This zone extends from
about 23.5° to about 66.5° north or south latitudes.
Tropical _____
_______ are warm and wet. (332)
Latitudes closer to the
______ tend to have colder climates. (325)
Tropical ________, or grasslands, contain tall grasses
and a few trees. (332)
In the summer, only the top meter of soil thaws
out. Below this depth is a permanently frozen layer called
__________. (338)
Mountains can also affect precipitation. As air rises to
move over a mountain, it cools. The cool air condenses,
forming clouds. Precipitation may fall. This process
causes the _____-________ effect. (327)
______ forms
when air moves from areas of high pressure to areas of
low pressure. (326)
______ biomes are found just south of tundra biomes in
the Northern Hemisphere. (339)
Temperate ______ tend to have high amounts of rainfall
and large seasonal temperature differences. (336)
Most places in the United States have four _______
during the year. (326)
Latitude affects temperature because latitude determines how much direct
______ energy an area gets. (325)