Which factor can decrease the rate of a chemical reaction? a) low activation energy b) high pressure c) low temperature d) high concentration of reactants

answer: c. two haploid cells

explanation:

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.