Ответы и объяснения

Three mounts ago I joined the Zoological Society of London. 
I decided to join the society because I want to help endangered animals.
I believe that every insects has the has the right to live.
All over the world many people are trying to save animals and birds, insects (crocodiles) and fish from death.
They organize Wild Animals' Parks where scientists watch the amimals and their young.

*как то так...