The deal centres around an agreement which countries have sought to agree to limit global temprature rise to 2c. This is a deal reache by all countries, aimed at reducing carbon emissons, which will therefore not stop global warming, but slow global warming down, and reduce it.
The countries which have came to this agreement ar mainly countries of the developed world, along with China, and India.
To be serious about climate change, and for these measures to be effective, we need to save habitats, and wild animals. If we do not do both of these things, then it is meaningless to cut Co2 emissions.
A healthy planet, and a reduction in climate change requires us to stop the destruction of habitats, and wild animals, only then will we be taking climate change sriously.