Which option is true of strength training? A. It decreases overall bone density. It decreases overall bone density.

B. It increases the effects of sarcopenia. It increases the effects of sarcopenia.

C. It preserves lean muscle mass. It preserves lean muscle mass.

D. It reduces testosterone levels. It reduces testosterone levels.

i have the IT IS C. IT PRESERVES LEAN MUSCLE MASS.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Describe five factors that influence the value of fuel

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !