How do city planners today hope to make American cities green

- setting aside large areas to plant trees.

- Properly setting up a system for waste disposal

- Controlling pollution.

Explanation:

- setting aside large areas to plant trees.

Trees naturally reduce the amount of CO2 and increase the amount of O2 from their photosynthesis process. Both will give benefit for the community in terms of health and slowing down Global warming.

- Properly setting up a system for waste disposal

Waste disposal system need to be separated into something recyclable and non-recyclable. Something recyclable can be used to create other products after cleaned and non-recitable need to be get rid off as soon as it's dumped to the environment. Waste that isn't managed properly can be extremely harmful to the environment.

- Controlling pollution from energy source

This can be done by reducing the tools/equipment's that rely on fossil fuels. In exchanges, Cities could start using a more environmental friendly energies such as solar or wind.

the united states has a federal government. the president is the head of the federal government of the united states. however, each state forms its government for administration purposes. the powers of the state governments are exercised within restricted state boundaries. and citizens participate in this government by voting.

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.