Choose all the answers that apply.
which of the following increases erosion?
clearing forests
leaving fields unplanted
careless farming
contour plowing
crop rotation
--
contour plowing occurs when:
farmers plow fields in horizontal rows
farmers stop plowing fields
farmers plow fields around hills
farmers plow fields around brooks and steams

1:

clearing forests

careless farming

2:farmers plow fields around hills

Explanation:

Erosion is caused by the debilitation of the soil, and one of the most common reasons for erosion is clearing forests, also called deforestation, plants and their roots help keep the soil in their place and use the water that runs through the soil helping avoiding erosion, Plowing fields are fields that take advantage of the elevation in the soil and plant in different levels of elevation, helping with this to prevent erosion in the soil.

the answer would be..

b. sucking