1.He found the linkage of soot exposure and cancerous causes due to chimney sweeps. This discovery was the first connection of cancer with job activity. The disease was known as chimney sweeps carcinoma.
3. Substances such as greenhouse gas and carcinogen can be reduced by using fuel that has less carbon emission. Nuclear power is a better alternative than coal or natural gas.
4. EPA is meant to oversee and conduct law making of protecting and promoting environmental lifestyle and protecting the environment. They pass laws and regulate cases in which environments are being harmed, or if there are concerns regarding forests, pollution, or wildlife.