Exam 37: Animal Distributions

Animals have become distributed around the earth by dispersal,continental drift,and ____________.

About how much of the earth's water supply is freshwater,including ice caps,rivers,freshwater lakes,etc.

Why are so many deserts located between 15 and 30 degrees latitude?

The phenomenon where visible and U-V radiation are absorbed at the earth's surface and re-emitted as longer infrared wavelengths that are then absorbed by water vapor,carbon dioxide,and methane,is known as

An aquatic habitat that is a transition zone where fresh water flows into the sea is called an ____________.

What biome has the highest agricultural productivity?

The relatively thin layer on the earth's surface where life is possible is known as the

Life on earth is confined to a narrow area called the ____________.

Why is the intertidal zone paradoxically both the harshest and the richest of all marine environments?

Deep sea communities on the abyssal plain are centered around ________ ________.

The vast open ocean is known as the ____________ zone.

It is thought that the northern landmass that resulted from the division of Pangaea fragmented and gave rise to

Lake Baikal in southern Siberia is unique as a lake because it is

To trace distribution by dispersal,a researcher must first establish the