Ecosystem

Question 1

a depiction of the amount of energy in each trophic level of an ecosystem

Answer 1

Energy Pyramid

Question 2

a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community

Answer 2

Food Web

Question 3

an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances

Answer 3

Decomposer

Question 4

a series of organisms interrelated in their feeding habits, the smallest being fed upon by a larger one, which in turn feeds a still larger one, etc.

Answer 4

Food Chain

Question 5

belonging or pertaining to the conifers.
Compare conifer (def 1)

Answer 5

Coniferous

Question 6

an organism, usually an animal, that feeds on plants or other animals

Answer 6

Consumer

Question 7

a complex biotic community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region, especially such a community that has developed to climax

Answer 7

Biome

Question 8

falling off or shed at a particular season, stage of growth, etc., as leaves, horns, or teeth

Answer 8

Deciduous

Question 9

the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms

Answer 9

Ecology

Question 10

a sequence of changing states that, upon completion, produces a final state identical to the original one

Answer 10

Cycle

Question 11

the continuous sequence of events by which atmospheric nitrogen and nitrogenous compounds in the soil are converted, as by nitrification and nitrogen fixation, into substances that can be utilized by green plants, the substances returning to the air and soil as a result of the decay of the plants and denitrification

Answer 11

Nitrogen Cycle

Question 12

a living thing, as an animal or plant, that influences or affects an ecosystem: How do humans affect other biotic factors

Answer 12

Biotic Factors

Question 13

the natural sequence through which water passes into the atmosphere as water vapor, precipitates to earth in liquid or solid form, and ultimately returns to the atmosphere through evaporation

Answer 13

Water Cycle

Question 14

a nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it

Answer 14

Abiotic Factor

Question 15

an organism, as a plant, that is able to produce its own food from inorganic substances

Answer 15

Producer

Question 16

the circulation of carbon atoms in the biosphere as a result of photosynthetic conversion of carbon dioxide into complex organic compounds by plants, which are consumed by other organisms: the carbon returns to the atmosphere in the form of carbon dioxide as a result of respiration, decay by fungi, bacteria, etc., and combustion of fossil fuels

Answer 16

Carbon Cycle

Question 17

any organism that exists by preying upon other organisms

Answer 17

Predator

Question 18

an animal hunted or seized for food, especially by a carnivorous animal

Answer 18

Prey

Question 19

the progressive replacement of one community by another until a climax community is established

Answer 19

Succession