Calcium which is a major mineral in the body
Answer:
A theory is a group of hypotheses that prove a law is true.
Explanation:
A theory is an idea based on principles. A hypothesis is an explanation with limited evidence. Laws are the system of rules indicated for each country.
I believe the answer is A.
I ruled out everything but C. and A. so it could be either.
Ecological balanced refers to the condition of dynamic equilibrium in a community of organisms in which the species, the diversity of ecosystem and the genetic pool remain relatively constant as a result of gradual changes that are brought about by natural selection. It is very important to ensure that the natural balance in an ecosystem is maintained. Typically, an ecosystem has to move through series of successional changes before it can reach the state of equilibrium. FOR AN ECOSYSTEM TO BE BALANCED, IT WILL TAKE BETWEEN THIRTY TO ONE HUNDRED YEARS depending on the type of ecosystem involved.
