What does dr. carroll mean when he says, "while mutation is random, natural selection is not"?

Mutation cannot be predicted and research cannot determine when mutations will occur. However, natural selection indicates that species with the strongest traits will multiply more and live longer than their weaker counterparts. Therefore natural selection is systematic and predictable.

True:  Because soccer fields need large areas or spaces and a town with already built houses would not suffice. In turn, the open available areas with trees and wildlife will be destroyed and mountains will be quarried and forcefully flattened to pave way for the fields. Soil erosion will happen because this will cause an imbalance on mountains, diverting the flow of the water to the low lands without trees seeping it. In addition, when these fields are already made, maintenance must also be sustained such as making the grass greener and healthier by putting pesticides and routine watering of soil to keep its moist  which will alter the natural soil quality.