............. is the introduction of harmful materials to the environment.
Pollution
This is the hole of the .............
ozone layer
The ................... is rising due to global warming.
sea level
An .................is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Desert, forest, oceans or jungles are different types of ..................
Ecosystem
Carbon dioxide ............... make the hole in the ozone layer bigger
emissions
Wind energy is a .................
renewable energy
Due to ........................ ice caps are melting.
global warming
This factory is emitting a lot of ..................
carbon dioxide
...................... is very important
Recycling