Which development plan would cause the least harm to the existing forest ecosystem? A. Spread the houses out evenly so that there is as much forest as possible between each of the houses
B. Place the houses close together and use the remaining forest as a natural common area
C. Build some big houses on large lots and some small houses on small lots so that families with different incomes can live together
D. Build several small clusters of homes in different places so that each house will have a few close neighbors

B. Place the houses close together and use the remaining forest as a natural common area.

Explanation:

Placing the houses close together and use the remaining forest as a natural area is the development plan that would cause little harm to the existing forest ecosystem because less area of forest will be disturbed and the remaining forest is protected from the harm. This type of development is good for both people and organisms present in the ecosystem due to little damaged of their habitat and these organisms can't be extinct from that area.

(nitrogen fixation) will be your answer sorry if im wrong