The function of testosterone is to ? a. lower sperm production in the testes b. develop male sex characteristics such as voice deepening c. regulate the emotions of a man. d. promote muscle and fat production in males and females.

What percentage of light hits earth's surface directly?

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.