Global warming brings many challenges. It causes more severe weather, which includes very violent, massive storms, increased air pollution, and higher ocean levels, which causes big flooding problems. In order to reduce global warming, society could be more careful to decrease the amount of carbon dioxide released into the atmosphere by using clean energy (e.g. solar panels) and avoiding gasoline fueled cars (e.g. use electric cars instead).
Environmental impacts that global warming causes include: more acidic oceans, filthy air, and the disappearance of wildlife species as habitats are ruined.
Furthermore, if we do nothing to help solve the problem of global warming, Earth's ecosystems will probably be greatly harmed and perhaps eventually disappear completely. As a result, humans ma face VERY severe consequences.
I believe that it is MOST crucial to use cleaner energy. That is an EXTREMELY important step to take in resolving global warming because if we continue to use polluting energy and release the same amount of CO2 into the air continually, the environmental problems listed previously will not get any better, and they will surely WORSEN.