Answer:
You will have to find many different methods in which the resource is most useful. Some resources may be useful in one place and some may be useful in another its all about how you use the resource.
Explanation:
Yes, when the egg and a sperm cell meet fertilization has taken place
Because they can be differentiated to form insulin-producing cells
Answer:
Our sun is extremly hot. like our sun, hydrogen is being converted into helium, a process which gives off energy that heats the star
Explanation:
B, hormones that serve as chemical messengers im not 100% sure though