Ecology Review

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

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The living portions of the ecosystem.

• Biotic factors
• Abiotic factors

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A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

• Population
• Community
• Habitat
• Ecosystem

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What are the Abiotic factors in this image? 

• water, sunlight, dirt, air
• birds and plants
• birds, water, dirt
• plants, water

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Different populations living and interacting with each other in the same area

• Biome
• Ecosystem
• Community
• Niche

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Which of these is a density independent limiting factor?

• competition

• parasitism/disease

• stress

• natural disasters

What does the term carrying capacity describe?

• The birth rate of a population.

• The ability of a population to accept new immigrants.

• The ratio of birth rates to death rates in a population.

• The maximum population size that the environment can sustain.

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As resources become ___________________, the growth of a population slows or stops.

• readily available

• less available

• more expensive

• cheaper

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This graph shows a _______________- curve

• dispersion growth

• density dependent growth

• exponential growth

• logistic growth

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At what number of rabbits does the population in the graph level off?

• 65

• 55

• 80

• 50

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