Select the correct answer. Human skin becomes dry during winter, making it more prone to infections than during summer. How do the sebaceous glands protect the skin normally? A. Sebaceous glands produce a substance that moisturizes and protects the skin. B. Sebaceous glands cause the hair to stand erect, which insulates and protects the skin. C. Sebaceous glands produce keratin, which gives the skin a tough structure and protection. D. Sebaceous glands contain collagen fibers, which provide strength and protection.
Answers: 2
Biology, 22.06.2019 02:00, sanakhalid8881
The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important
Answers: 3
Biology, 22.06.2019 08:50, eyeneedalife
What processes take place before the mature mrna exits the nucleus?
Answers: 1
Select the correct answer. Human skin becomes dry during winter, making it more prone to infections...
English, 16.06.2021 02:20