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Find the area of shaded region z=-0.89

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b. they can have a lower impact on the environment. c. they can be used up rapidly. d. they can contribute to global warming.

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition