The environment is all the natural components and systems that make up the planet. This includes weather patterns, ocean currents, and ecosystems in all parts of the world. Ecosystems are dependent on weather patterns to sustain the chain of life that leads from plants to higher life like mammals.
With global ocean temperatures rising steadily we are already seeing an effect on coral reefs. Most notably the Great Barrier reef off of Australia experiencing massive sections of the reef "bleaching" or dying. Learn about the effects climate change is having on the ocean here.
Because the rise in CO2 has a delayed effect in raising global temperatures even if we were to stop producing greenhouse gasses now, we would still experience climate change. Its up to us to help mitigate this problem now before it gets out of control and destroys large parts of our ecosystems which we depend on. Learn about it here.
Climate change is a vicious cycle, the more greenhouse gasses that are released the more it destroys the plant life that can help scrub the atmosphere. Furthermore inside the polar icecaps are greenhouse gasses that are trapped, if the temperature rises enough to melt significant amounts of the ice it could lead to a runaway effect. Learn more here
Alone we cannot stop climate change, only by working together and making efforts small and large can we help stop the problem. Learn how to help here
"By the time we see that climate change is really bad, your ability to fix it is extremely limited... The carbon gets up there, but the heating effect is delayed. And then the effect of that heat on the species and ecosystem is delayed. That means that even when you turn virtuous, things are actually going to get worse for quite a while. "