4. What is soil conservation?
​

Soil conservation is the prevention of loss of the top most layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination.

Explanation:

The prevention of loss in the most top layer of soil from the erosion or maybe prevention of deducted fertility

it's the release of intestinal gas, which forms as a result of digesting food. when partially digested carbs reach the colon, bacteria convert part of that food into hydrogen and carbon dioxide gasses. you cant stop the stink, its a gas that comes naturally.

explanation:

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.