Explain two human developments that would increase the risk of people being affected by the natural hazards

Human activities that increase the risk of natural hazards includes urbanization and agricultural development

Explanation:

For urbanization, more and more place is required so that houses that are built by people to settle and more roads are required for movement of people.  

This leads to the cutting of trees and forests which disturbs the ecological balance resulting in natural hazards. The development of agriculture means more land is being used for agriculture purposes which means cutting down of trees again leading to natural hazards.

seismic wave -

an elastic wave in the earth produced by an earthquake or other means.

explanation:

i'm sure the answer you are looking for would be

a. an ice age

hope this contact me if this didn't or you need with more answers : )