Multiple choice

Mammalian skin has

  1. hair

  2. sweat glands

  3. oil glands

  4. All the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mammalian skin is characterized by the presence of hair (or fur), sweat glands, and oil (sebaceous) glands, all of which serve various thermoregulatory and protective functions.