Exam 36: Ecosystems

A ___________ is a type of major land ecosystem determined mostly by the features of the climate in the area.Many are actually named for the dominant plants or lack of.

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

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

Why would few reptiles be found in the tundra?

All of the different kinds of interacting organisms living within a certain area make up a:

How have humans intruded into the global water cycle?

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

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

Several food chains woven together comprise a ______________.

Where is an estuary found?

Biological magnification can lead to high levels of mercury and lead in organisms higher in the food chain.

Which is incorrect about deep-sea organisms?

____________ is characterized by unusually warm ocean temperatures in the eastern Pacific.

_______ is characterized by unusually cold ocean temperatures in the eastern Pacific.

Loss of water from the leaves of plants occurs mostly via a process known as:

It takes the Earth _______ to orbit around the Sun.

The total amount of energy fixed by photosynthetic organisms minus the energy used in their own metabolic activities is:

_______ bacteria convert nitrate into atmospheric nitrogen.

Choose the best definition of the term "ecology."

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