Empty calories are defined as a. calories from solid fats and/or added sugars b. calories from water and other foods or beverages that have zero calories c. calories from low-fat foods and/or fruits and vegetables d. calories from dairy products only

i believe it would be the lungs.

enzyme speed up the reactions

wait any answer choices plz

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.