Children are the primary sufferers
a. insomnia
b. night terrors
c. sleep apnea
d. narcolepsy

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots