Answer:
the answer would be the 3rd answer
Explanation:
a half life is the time it takes for half of a radioactive substance to decay
I hope this helps :)
The limitation is that she can't test is on humans for ethical reasons. In order to test this, theoretically, she would need to ask some women to use this cosmetic and compare their fetuses to the fetuses of women who didn't. But this is not likely to be approved by the ethical committee, as causing damage to a fetus is not ethical.
<span>A medical researcher can successfully prevent communication between cells by blocking the chemical messengers from traveling to or reaching the target cells. A medical researcher can also prevent the cells from producing the chemical messengers.</span>
Answer:
Predators
Explanation:
Because they eat all the meat so if they wanted to they could eat the predators controlling the lesser amount
