Question

Which human activities cause sudden changes to Earth’s surface?

Choose all answers that are correct.

Responses


erecting wind turbines


cutting vast areas of forest

planting crops in fields

building tunnels through mountains

Answer 1

Correct answers: cutting vast areas of forest; building tunnels through mountains.

Reason: both remove or rearrange large amounts of Earth's surface quickly (clear‑cutting and excavation). Planting crops is a gradual land‑use change, and erecting wind turbines produces only localized, relatively small changes.