Please, could you help me, with my project? Thank you
A NEW DARK AGE FOR HUMANITY
INTRODUCCION
20 Years from now, our earth will be very bad, the climate is changing now, and will be worst, and it is sad because all the problem is caused for us the humans.
Cutting trees.- for example in our country, people are cutting the trees This is a great problem because the trees give us oxigen.
Plastic bags.- those aren't recyclable and they dirty our planet.
Species extinction.- Human activities are causing a massive, rapid and worldwide extinction of both plants and animal species.
CONCLUSION
The human has been devastating the Earth hisbiosphere and crippling its ecological, so now we should stop this problem caring our trees, planting two by one tree, when we cut it. teaching our people don't dirty our planet
3 Answers
Very nice, maylegoas! Here are some corrections. 
20 Years from now, our earth will be in very bad shape. The climate is changing now, and will be worse, and it is sad because the problem is caused by us the humans. (or 'the problem affects us, the humans.)
Cutting trees.- For example in our country, people are cutting the trees. This is a great problem because the trees give us oxygen.
Plastic bags.- Those aren't recyclable and they dirty our planet.
Species extinction.- Human activities are causing a massive, rapid and worldwide extinction of both plants and animal species.
CONCLUSION
Humans have been devastating the Earth and its biosphere and crippling its ecology. So we should now stop this problem by caring for our trees, planting a tree or two, when we cut one down, and by teaching our people to not dirty our planet.
¡Qué sigas tu buen trabajo! 
Twenty years from the (the climate) on the earth will be very bad.The climate is changing now and will be worse.It is sad because all of the problems caused for is (caused) by humans. (Cutting trees,plastic bags and human activities are three problems I see.) In our country people are cutting trees.This is a great problem because the trees give us oxygen.
Plastic bags aren't recyclable, and they dirty the planet.
Human activities are causing a massive, rapid, and world wide extinction of both plant and animal species.
Conclusion The human animal has been devastating the Earth's biosphere and crippling its ecology.We should/could stop this problem by caring for our trees. We should plant two for every one we cut down. We need to teach people not to dirty our planet.
How I might sharpen what you wrote a bit.
Hi Edi: What is it that you need help with here?
