What is it called when the body needs increased amounts of a drug to produce the same levels of euphoria?
a. anxiety
b. elevation
c. tolerance
d. depression

you get into a car crash and die

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.