What percent of energy is transferred from the sun to the level indicated? (3 points) О а
50 percent
Ob
100 percent
О с
90 percent
Od
10 percent

Cells destroy body cells infected by a virus or bacteria.

List five ways we are indebted to phytoplankton

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.