What impact has "tavy" farming had on madagascar's environment? describe at least three effects of this practice. (site 1)

Pollution in the environment, deforestation and lowering biodiversity are the three effects of tavy farming.

Tavy farming refers to  practice in which a farmer cuts a portion of the forest and then burns it. After turn into ashes the farmer planting rice that is irrigated by rainfall alone. This farming has a negative impact on the Madagascar's environment due to cutting of trees, burning of forest and destruction of habitat of organisms living in the forest.

In this farming, pollution occurs due to burning of wood, deforestation occurs as well as lowering the biodiversity of the area so we can conclude that pollution, deforestation and lowering biodiversity are the three effects of tavy farming.

Learn more: link

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

i think that it is plants