Ch. 3 & 4 (Ecosystems, Energy. consumers, producers and Cycles of matter)

Which is a biotic factor that affects the size of a population in an ecosystem?

Nitrogen fixation is carried out primarily by

Why can't producers in some ecosystems make an unlimited supply of organic materal

Carbon cycles through the biosphere in all of the following EXCEPT

All of the following factors contribute to Earth's climate EXCEPT

Which part of the water cycle is a biological process?

A model of complex feeding interactions

A wetland that contains a mixture of fresh water and salt water is called

Compared to land, the open oceans are

The branch of biology dealing with interactions among organisms and the environment

A bird stalks, kills, and then eats an insect

What is happening to the water at D in figure 3-3?

The total amount of living tissue in an ecosystem

What is the greenhouse effect?  

What is the term for each step in the transfer of energy and matter within a food web?

What do we call animals that eat both consumers and producers?

Only 10 percent of the energy stored in an organism goes to the next trophic level. The rest is

The conditions of the atmosphere at a specific time and place-

How do most primary producers make their own food?

The nutrient availability of aquatic ecosystems is the

The repeated movement of water between Earth's surface and the atmosphere is called

The photic zone is located

What is at the base of all ecological pyramids?

The Earth has three main climate zones because of ...

Animals get most of their nitrogen they need...

Which is an example of an abiotic factor?

What goes in Box 5 of the food web

Because of biogeochemical cycling

Organisms need nutrients in order to

Which part of the figure shows transpiration?

Movements of energy & nutrients through living systems are different because

Each of the following is an abiotic factor in the environment EXCEPT

Which of the following descriptions about the organization of an ecosystem?

why is phosphorus very important for living things 

Corn planted in a field that has been previously planted with legumes is likely to be

during a long period when there is no rainfall, a lion may leave its usual hunting area due to

Animals that get energy by eating carcasses of other animals that have been killed by predators

Which ecological inquiry method is an ecologist using when he or she sets up a greenhouse and measures the results?

Which of the following organisms does NOT require sunlight to live?

Matter can recycle through the biosphere because

In what way are herbivores and carnivores alike?

A word that means the same as consumer is

The algae at the beginning of the food chain are...