Which of the following would have the best thermal insulation properties? A. A nylon windbreaker
B. A rubber raincoat
C. A cotton sweater
D. A down-filled coat

screening

explanation:

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

answer; i believe that the correct answer is (a) potassium(k)

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.