try and limit the amount of times you have to drive, try riding your bike or walking as much as you can
Recycle as much as you can, when you have trash, throw it in a trash can, not litter
make sure that when you cut down a tree plant another sapling. this will help restore the forest.
never pollute the water or pollute ever, polluting can cause harm to the animals in the area, such as fish birds and turtles
try and limit the amount of electricity you use, and try and use reusable energy sources. The more energy you use from a nuclear power plant, the more fossil fuels and nonrenewable resource they have to burn
try and limit the amount of ground you have to clear in order to make a building or road.