Soil is a resource that can be used in a sustainable manner. fertility of soil can be sustained by protecting topsoil from and contamination. because soil fertility is replenished by decomposition of organisms, it is necessary to ensure that the natural life cycle of plants and wild animals is not disrupted. that is why is an effective measure against land degradation.

Yes, we must not disrupt life cycle of animals or anything else

Explanation:

Lets take an example, if you could kill all the lions on earth, bucks whould have over run the leaves, grass, which causes erosion, and that causes drought, so many factors can be pulled out of this

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects