Which of the following is not true of environmental health?

it is a branch of public health.

it focuses only on how natural disasters impact health.

it focuses on health risks from the natural and man-made environment.

it focuses on human health, not on the health of other species in the environment.

It focuses only on how natural disasters impact health

Explanation:

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.