Which of these problems would be best studied with a survey? a. Should I buy a laptop or desk computer for my home? b. Which brand of hand soap is more effective in killing bacteria? c. Which type of milk do most people buy whole, low fat, or skim? d. Which activity causes a greater increase in heart rate?

answer; /// i believe that the correct answer is (50%);

there really is life in the deepest part

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added