Dear student you should ask single question at one time.
Some of the efforts at global level for resource conservation are:
The Club of Rome formed to create and propagate awareness about need for resource conservation .
Brundtland Commission report which was presented in 1987, introduced the concept of sustainable development.
Earth summit where the the leaders of more than 100 nation states signed the Declaration on Global Climatic Change and Biological Diversity.
At National level Government has set up national parks, wildlife sanctuaries and biosphere reserves for protecting natural vegetation and wildlife.
Wild life protection act implemented.
making a list of protected species and addition of many more insects, plant etc in the list.
Poaching a severe crime.