Question

How did the Olmec civilization's use of slash-and-burn agriculture affect the environment?

A.
It helped forests grow quickly.

B.
It redirected rivers toward farmland.

C.
It flattened out steep hills and mountains.

D.
It drained nutrients from the soil.

Answer 1

The slash-and-burn agriculture practiced by the Olmec civilization eventually drained nutrients from the soil, requiring farmers to move to new areas to maintain fertility. In the specific context of the question, the correct answer is: D. It drained nutrients from the soil.

Step-by-step explanation:

The use of slash-and-burn agriculture by the Olmec civilization had a significant impact on the environment. This method involves cutting down the vegetation in an area and then burning the remains. The ash from the burned plants is used to add nutrients to the soil, enhancing its fertility and making it suitable for farming. However, this practice can also lead to nutrient depletion once the added nutrients are washed away by rain. Over time, farmers have to abandon the exhausted land to allow for forest regrowth, which can take several years. While temporarily fertile, the constant clearing and burning of new areas can lead to soil erosion and loss of biodiversity.