Our environment is our survival 
The air we breathe, the food we eat , and the water we drink are very important  
components of our precious environment.People and animals need air to breathe, and plants rely  
on carbon dioxide from the air to make their own food.Besides,  
we need to use clean renewable and ecofriendly types of energy such as solar  
and wind energy to replace fossil fuels that cause a lot of air pollution.Moreover, forests and  
other ecosystems the habitats for different species.Cutting down trees, or deforestation, is a big environmental problem that leads  
to the loss of habitats of different species.In addition,  
air pollution contributes to the increase in the Earth's temperature and global  
warming.