The approach that you're mentioning is called the <span>sociobiology approach. It's basically approaching biology and evolution but also including principles found in sociology.</span>
Answer:
trees is best described as woods or forests also
nitrogen<span> gas into ammonia used in fertilizers ammonia is converted to nitrates by nitrifying </span>bacteria<span> in the soil.</span>
Vaccine, bacteria, pathogens, cells, toxins, antibiotics. In that order vaccine being first
