On what basis have biologists determined that archaea and bacteria are not closely related?
a. they cannot interbreed.
b. they look very different.
c. their dna is very different.
d. they live in very different places.

In general, how long does it take to accomplish a long-term goal? a. a few days to a weekb. a few weeks to a monthc. a few months to a yeard. more than a year

What causes temperature extremes in the desert

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand