I need a list of different environmental problems?

please can someone help i need to find out different environmental problems with the world like pollution and deforestation. I need more though so please give me more.|||Shrinking rain-forests in South America


Spreading of the Sahara Desert


Endangered species dying out


Unsafe drinking water


Clear-cutting of forests for pasture or lumber


Overfishing our oceans


High-altitude air polution, including ozone layers|||1. GMO's altering native species dna


2. Billions and trillions pieces of plastic floating around in the north pacific


3. Pesticides and herbicides infecting the water supply for the entire planet


4. Fresh water resources disappearing for the entire planet