Which factor influenced the U. S. government's decision to establish the

Environmental Protection Agency (EPA) in 1970?

new research on the harmful effects of pesticides

increased competition in global agricultural markets

high unemployment rates in the waste disposal industry

pressure from farmers for increased government regulation

New researhc on the harmful effects of pesticides influenced the US government's decision to establish the Environmental Protection Agency in 1970.

Explanation:

The United States Environmental Protection Agency (EPA) is the government agency responsible for health and the environment in the United States.  

The EPA was established by President Richard Nixon on December 2, 1970. In July 1970, it was approved by the public as demand for cleaner water, air, and land following environmental disasters such as the 1969 Cuyahoga River fire. Prior to the establishment of the EPA, the US government did not have structured instruments to address pollution that is hazardous to human health and the environment.

the answer for 3 is b and the answer for 4 is d

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.