What is the function of aldosterone

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

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic