Which statement is true about the male reproductive system? the testes produce semen. a. sperm cells are the largest component in the composition of semen. b. the scrotum functions to keep the testes at an optimum temperature. c. the penis enables sperm to be deposited directly into the uterus. d. nextreset

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Injuries in the environment are a result of

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.