Answer: B
Explanation:The energy needed by living things comes from the sun. Every ecosystem depends on green plants to trap the energy in sunlight and change it into chemical energy. The process by which green plants convert the sun's energy is called photosynthesis.
I believe the correct answer is A. Increases the rate of a chemical reaction. This is because they act as catalysts.
Answer:
They are called covalent bonds.
Explanation:
I just went through the lesson.
Answer: A. The alleles that a person has.