Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle? Nitrogen-fixing bacteria converts

A) nitrogen gas into ammonia
B) nitrates into nitrogen gas
C) ammonia into proteins
D) proteins into nitrates

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material