Two ways in which the evolution of organisms can have a harmful effect on humans

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Which layer will become saturated first when rain falls?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?