Away in which science has improved a societal problem.

a. contaminated water being purified
b. pathogens becoming resistant to antibiotics
c. bacteria contaminating food
d. unknown diseases appearing in some areas

How does food concentration affect yeast activity

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.