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
............. is the introduction of harmful materials to the environment.
Pollution
...................... is very important
Recycling
This is the hole of the .............
ozone layer
The ................... is rising due to global warming.
sea level
Carbon dioxide ............... make the hole in the ozone layer bigger
emissions
Due to ........................ ice caps are melting.
global warming
Wind energy is a .................
renewable energy
This factory is emitting a lot of ..................
carbon dioxide