Environmental Final Review

Front

The process by which individuals have favorable variations and are better adapted to their environment and are able to survive and reproduce is called ?.

Back

natural selection

Front

Rank the levels of organization from most complex to simplest: biosphere, ecosystems, communities, populations, organisms.

Back

biosphere > ecosystems > communities > populations > organisms

Front

If the bear population decreased in the ecosystem shown to the left, what would happen to the fish population?

Back

increase because more fish would survive and reproduce since it's a natural predator has decreased

Front

Based on the fact that Energy is never created or destroyed the reason that energy appears to be lost during one of the trophic levels is that ...

Back

Energy is converted to heat in all trophic levels

Front

Consider this food web. It is rich with animal species that fill a variety of niches within the ecosystem. Imagine that a local farmer has sprayed the area with insecticide. Predict how this might impact the food web and the roles each organism plays within it.

Back

One section of the food web would be greatly impacted: the section containing the insects and insect-eating animals. Without insects and possibly spiders, there would be no food for the toads and insectivorous birds.

Front

According to an ecological energy pyramid, the seals would receive about ___________ of the energy from the coconuts.

Back

1%

Front

Based on the data, what clam can be made about the amount of carbon produced by fossil fuels? Options: There are no problems with amount of carbon fossil fuels produce, because there are plenty of forest to cycle the carbon. There is too much carbon produced by fossil fuels, because there are not enough forest to complete the cycle. There is too much carbon produced by fossil fuels, because there are plenty of forest to absorb the carbon.

Back

There is too much carbon produced by fossil fuels, because there are not enough forest to complete the cycle.

Front

Which two biogeochemical cycles are represented by the model?

Back

phosphorus and nitrogen cycles

Front

Ecosystem stability can be a factor of species diversity within a community. Which letter below the image would indicate the stage of success in an ecosystem that represents the greatest potential for stability and resilience? Options: Letter A because light levels are high and will promote the greatest growth of primary producers. Letter B because aspen, spruce, and pines can provide the most opportunity for primary consumers to hide from their predator species. Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success. Letter D: All letters represent equal opportunity for stability as the area of land does not change over time.

Back

Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.

Front

The model to the left shows a type of ecological succession over time. What type of ecological succession is shown?

Back

secondary succession