The study of organisms and their environment.

• Ecology

• Anthropology

• Zoology

• Geology

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Which of the following would be a topic that would interest an ecologist?

• The mutation rate of Rinderpest in Cape Buffalo.

• The growth rate of non-native sedges in a lab.

• The impact of an introduced predator on a woodland community.

• The amount of rainfall in the Amazon rainforest.

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What happens to most energy in an ecosystem?

• It is stored as fat

• It is converted to biomass

• It is lost as heat

• It is recycled completely

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What factor most directly affects an organism's survival in changing climate conditions?

• Population size

• Adaptation capability

• Community size

• Food web position

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Which level of an energy pyramid has the most energy?

• Secondary consumers

• Tertiary consumers

• Primary consumers

• Producers

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How do heterotrophs obtain their energy?

• Through photosynthesis

• By consuming other organisms

• Through chemosynthesis

• By absorbing minerals

What characterizes a community in ecological terms?

• Different populations living and interacting in the same area

• Only plants in an ecosystem

• Only animals in an ecosystem

• A single species group

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Which term describes all the living factors in an ecosystem?

• Abiotic factors

• Physical factors

• Biotic factors

• Chemical factors

What is predation?

• Competition between species

• Plant growth

• Sharing of resources

• One organism eating another

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A population is defined as:

• All species in an area

• All living things in an ecosystem

• Members of different species living together

• Members of the same species in an area