How does one let a person go?

What is the main causes of gray hairs and balding? write your answer in 2 paragraphs

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use

Which food preservation method can people use at home? a. fermentation b. irradiation c. pasteurization d. thermal processing