Respiration is a process of exchanging gas.
<span>All natural radiation is at a level low enough to be safe</span>
You are right, it is B because, endocrine glands, as part of the endocrine system, they regulate and maintain a constant equilibrium in our bodies, known as homeostasis.
Adenine and something that starts with a G
Answer:
Digestion, excretion and transportation of substances.
Explanation:
Chemical reactions such as breakdown of food, cleaning of blood and absorption of nutrients and digestion are the activities that our body done with the use of energy. Digestion of food needs energy for the breakdown of food with the help of several enzymes. Transportation of waste materials and other substances also needs energy. Our cells absorb nutrients with the help of energy molecules through active transport.
