Which type of organic molecule is a starch?
a. protein
b. carbohydrate
c. nucleic acid
d. lipid

The best answer is B.

Carbohydrates, also known as saccharides , are molecular compounds made from only three elements namely carbon, hydrogen and oxygen.

They are also known as sugars. Some of these sugars are simple molecules called monosaccharides, such glucose made from just one molecule. Other carbohydrate molecules are very large, such as  starch.

Starch is made up of a large number of monosaccharides namely glucose. Plants use starch as a way to store glucose and also as food in some mitochondrial processes.

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.