When a farmer breeds his or her best livestock, the process involved is (chose all appropriate answers.) a artificial selection b natural selection c artificial variation d directional selection e disruptive selesction

artificial selection

Explanation:

Artificial selection is done either by inbreeding or cross breeding. Inbreeding is the crossing of genetically closely related individuals and is useful for retaining desirable qualities. Hybrids are formed from artificial selection. Hybridization results when varieties of organisms with different characteristics are crossed. The resulting offspring often show characteristics which are superior to either of the parents and are said to possess hybrid vigour.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

i think the answer is b.