I believe the answer is c
Answer:
Today most people in developed countries have a scarcity of food sources.
Antibiotics have a tendency to weaken the immune system.
The prairies are ecosystems where the grasses, herbs, and shrubs are the dominant vegetation type. It is one of the most intensive crop producing areas with highly valued productive soils. The diet of the people who lived there would be based on corn wheat, rice, soybeans, bean, peas, etc.
On the other hand, people who live on rocky seacost will most likely consume seafood such as mussels and barnacles.
I believe the answer would be D. The Moon Orbits the Earth.
Hope this helps.
