I believe the answer is 3 - He hypothesized that all substances can be broken down into a smallest part called the atom.
Answer:
Carbohydrates are energy-providing feed components composed of carbon, hydrogen, and oxygen. They should make up about 75 percent of an animal's diet. The energy they provide powers muscular movements. Carbohydrates also produce the body heat that helps keep the animal warm.
Answer:
the the that keeps the water cycle going is heat