Vitamin D is sometimes called the sunshine vitamin because a. it is available in fresh orange juice b. exposure to sunlight converts a precursor form to vitamin D c. it can be destroyed by exposure to sunlight d. it is the yellow-orange color of the sun

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

How does deforestation affect the water cycle? a. it increases the amount of runoff b.it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.