What is the term for the protective wall hat bacteria survive unfavorable conditions?

heat a spark and oxygen

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.

"do a testcross with a homozygous recessive plant."