Which best describes a possible negative impact of irrigation of farmland? 1.) Food can be produced in dry areas.
2.) Increased runoff can pollute bodies of water.
3.) Food can be produced through drought years.
4.) Water can improve the livelihood of farmers.

2

Explanation:

My uncle; who lived on a farm said that they always had to be careful about to much runoff that usually pollutes water and I learned about that a while ago in science, so I think 2 is the most negative impact.

most community's take hundreds of years to become stable

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.