Humus is: 1)the artificial fertilizer applied to monocultures

2)composed of organic compounds and increases the water-holding capacity of soils

3)one of the primary causes of desertification if present in excess

4) promotes eutrophication when agricultural practices allow it to get into waterways

Humus is composed of organic compounds and increases the water - holding capacity of toys

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.