10. all carbohydrates are made of -
a. carbon, hydrogen, and oxygen.
b.
glucose, sucrose, and fructose.
ove.
cellulose, glycogen, and starch.
d. guanine, alanine, and cytosine.

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Study this image which statement best describes the rock shown check all that apply