Mr. Blast’s classes are studying different forms of energy and how energy travels through a medium. They learn that sound waves transfer energy through a material. Which of these materials could sound waves travel through? Choose the three that apply. a
rock
b
outer space
c
air
d
water

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.

Why does controlling transcription affect prokaryotic gene expression?

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?