Exam 20: Ecosystems

The tropics are warmer than the temperate regions because

How have humans intruded into the global water cycle?

Partly enclosed bodies of water where the salinity is intermediate between that of seawater and freshwater are called ___________________.

A type of ecosystem characterized by luminescent creatures eating debris can be found

When you eat corn on the cob,you are eating at which trophic level?

Circling the globe at northern latitudes is ____________,with coniferous trees and long,cold winters.

The flow of energy is one way,but nutrients in ecosystems _____________.

Which of the following is a decomposer?

The British Isles experience warmer weather than other areas of the same latitude because of

The type of ecosystem that can be found bordering the tropics worldwide that is characterized by huge herds of grazing animals is

All the great deserts of the world occur at 65^° latitude.

The earth completes one rotation about its axis every

The community plus its habitat make up an ____________________.

It takes the earth _______ to orbit around the sun.

Why do food chains rarely have more than three or four steps,or links?

Plants obtain the carbon used in the manufacture of organic compounds from

In an inverted aquatic biomass pyramid,which organism is likely found at the bottom?

Characterized by permafrost and low,shrubby plants,_______ can be found nearest the poles.

Describe the environmental water cycle.

Tundra tends to be more northern than taiga.