How do monosaccharides combine to form polysaccharides? by removing hydrogen (H2) from the monosaccharide molecules
by removing water (H2O) from the monosaccharide molecules
by adding water (H2O) to the monosaccharide molecules
by removing oxygen (O2) from the monosaccharide molecules

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere