Controlled population growth.
Explanation:
US is a highly developed country and it has expansive infrastructure and highly mechanized agricultural equipments. So first option is not a choice. Second, access to chemical fertilizers and pesticides in a country with such advanced agriculture infrastructure is very easy. Third US is well known for using GM crops.
US does not have a controlled population growth because if not the birth rate then migration of people to US is a major concern for that country. Thus, this will be a correct choice for the given question.
Answer:
The mass of a proton in scientific notation, is 1.67×10-27kg.
Explanation:
It's the mitochondria, the "powerhouse of the cell".
<span>C, Homeostasis is the quality of organisms that describes their ability to maintain internal conditions in a stable manner amid external conditions that change at certain times and periods. It is the way to keep in balance in environment and environment.</span>
