Variables on Population Size

The graph shows the trend in population sizes for snakes and frogs living in same ecosystem.

• Frogs depend on snakes for food.

• Snakes and frogs compete for food with one anther.

• The environment can support more snakes than frogs.

• The population of snakes increase with the increase in the frogs

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A change in the number of one type of organism will cause a change in ___________.

• the world

• carrying capacity

• the number of other types of organisms

• the environment

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What is the bust prediction about what will happen to the foxes?

• The drop in the mouse population will lead to a drop in the fox population.

• The drop in the mouse population will lead to no change in the fox population.

• The drop in the mouse population will lead to an increase in the fox population.

• The increase in the mouse population will lead to an increase in the fox population.

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On a small island, scientists observed and graphed changes in wolf and moose populations. From 1965 to 1970, which data pattern did scientists observe?

• A drop in wolf population and a drop in moose population.

• An increase in wolf population and a drop in moose population.

• A drop in wolf population and in increase in moose population.

• An increase in wolf population and an increase in moose population.

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factors that affect a population depending on its size​

• Density-Dependent factor

• Density-Independent factors

Why would the fish population decrease?

• Less food

• More food

• Less Predators

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In the context of population dynamics, what is a "limiting factor"?

• A factor that has no effect on the growth of a population.

• A factor that increases the carrying capacity of an environment.

• A factor that restricts the size of a population.

• A factor that promotes unlimited growth of a population.

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The size of the population of a species in an ecosystem is determined by the ​ (a)   factors available to them.

• biotic and abiotic

• writing and drawing

• chemistry

• blanket and pillow

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The number of individuals in the population.

• population size

• density

• dispersion

The number of individuals in the population.

• population size

• density

• dispersion