Ecology

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Which organism is considered a producer?

In an energy pyramid, the energy for use by organisms in first trophic level originally comes from

The carrying capacity for herbivores in a habitat is most directly affected by the availability of

Which type of organism can obtain energy directly from any of the other organisms in an ecosystem?

In 1960, an invasive species of fish was introduced into the stable ecosystem of a river. Since then, the population of a native fish species has declined. This is an example of an

One advantage of biodiversity in an ecosystem is that it

Which human activity would most likely deplete finite resources?

Abiotic factors that affect the growth of grass in a lawn include