Identify a problem of human impact on the environment that could be solved through designing a device or process. Define the problem and brainstorm at least two possible solutions. identify who would be helped by solving the problem.

Chimneys and electric engines.

Explanation:

Pollution occurs from the industries and smoke produces by vehicles are two process which is responsible for global warming. Filters and electric engines are the devices used to solve the problems created by humans. Filters in the chimneys of industries and using electric engines instead of fossil fuel engine are the devices or processes used for solving this problem. The government has the power to solve this problem of environment by installing chimneys  in industries and produces electric vehicles.

mercury

explanation:

mercury is the least dense because of its size