Amino acids that can be made by the body and are NOT necessary in the diet are called:

A. Building blocks of lipids: Amino acids are the building blocks of proteins, not lipids. Lipids are composed of fatty acids and glycerol.

B. Classified as monosaccharide, disaccharides, and polysaccharides: These classifications refer to carbohydrates, not amino acids.

C. Classified as essential and nonessential: Amino acids are classified as essential (must be obtained from diet) and nonessential (can be synthesized by the body).

D. Building blocks of carbohydrates: The building blocks of carbohydrates are simple sugars (monosaccharides), not amino acids.

A. Scars from a severe burn: Although burn scars may increase skin sensitivity and vulnerability, they are not a primary cause of skin cancer.

B. Exposure to environmental pollutants: Some pollutants may contribute to skin damage, but UV radiation is the primary cause of skin cancer.

C. History of viral illness: Some viruses, such as HPV, are linked to specific cancers (e.g., cervical cancer), but they are not a primary cause of skin cancer.

D. Sun exposure: UV radiation from the sun is the most significant risk factor for skin cancer, particularly basal cell carcinoma, squamous cell carcinoma, and melanoma.