Answer:
D
Explanation:
A process that changes the composition of rocks causing them to break down.
A series of logical steps followed to solve problems.
Answer:
Explanation:
Most bacteria will die at first when an antibiotic is administered. But few bacterial cells will live. Those cells that live will reproduce and give that trait that is resistant against the antibiotic to their "kids." Therefore, the next generation of bacteria will be resistant to the antibiotic and the antibiotic will not be able to kill the bacteria infection. So in this case, natural selection was able to kill off the bacteria that wasn't resistant to the antibiotic and only the "fittest" survived
Insulin (secreted from the pancreas)
Oversecretion: hypoglycemia (low level of sugar in the blood)
Undersecreation: hyperglycemia (high level of sugar in blood, Diabetes Mellitus)