B because when erosion occurs through wind and water it takes away the topsoil for plants to grow.
If you eat unhealthy now then you could develop health issues such as diabetes heart problems wating disorders and cause obesity if you eat unhealthy then you probably won't live as long of a life as compared to someone who has been eating healthy and the if you eat good now you can love a longer life with less problems
The concept is gene enviornment correlation.
hope it helps u.............
Answer:
Community: A group of populations living together and interacting with each other within a given area.