Help me with number 2 number 3 plz

2. Virus body is made of two types of nucleic acid such as DNA or RNA. Some viruses are made of deoxyribonucleic (DNA) and some are made of ribonucleic acid (RNA).

3. There are five steps which complete the life cycle of virus i. e. attachment, penetration, uncoating, biosynthesis and maturation. Each and every step is important for virus life cycle. Without these steps virus cannot be formed.

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.