What do prokaryotes lack?

A) a nucleus
B) cell walls
C) the ability to perform photosynthesis
D) the ability to evolve over time


A

Environmental & Atmospheric Sciences

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Halley's comet has an average orbital period of ________ years.

A. 76  B. about 10,000 C. 10 D. 577  E. about 100,000 

Environmental & Atmospheric Sciences

For a landfill, which of the following techniques provides an incomplete solution to reducing space?

A. open dumps B. incineration C. sanitary landfills D. ocean dumping

Environmental & Atmospheric Sciences

The philosophy of the Endangered Species Act primarily reflects

A) political values. B) instrumental values. C) intrinsic values. D) economic interests.

Environmental & Atmospheric Sciences

Reintroduction of the wolf eventually reduced attacks on domestic cattle by what other species?

a. golden eagle b. Coyote c. Fox d. grizzly bear e. local wild dogs

Environmental & Atmospheric Sciences