Viruses are not considered to be living things, but they depend upon living cells for energy, reproduction, and protection at the expense of the cells that they invade.
the type of relationship described could best be classified as one of
a) commensalism.
b. mutualism.
c. parasitism.
d. resignation.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

burning fossil fouls really decrease the carbon in the atmosphere so b