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This viewpoint is based on nature having value for just being nature.

This international environmental agreement was formed to reduce greenhouse gas emissions.

Coal is mostly nitrogen, but it also contains small percentages of impurities.

Environmental systems can either be open or closed. Which best describes an open environmental system?

____is an example of an r-selected species.

Rapid climate change is due to

Cannibalism usually _____________ when food is in short supply and the density of individuals in the population increases.

Every species has a niche. Which of the following statements helps to accurately describe the opossum shrimp’s niche?

A tobacco plant that contains the phosphorescent genes of a firefly is an example of a ________.

Which set of components make up the best example of an ecosystem?