1
The process of removing solid, liquid and angerous waste.
2
A plan that observes and controls operations.
3
Advanced and modern devices used for different purposes.
4
The general disturbance in sonar transmissions which is due to vehicles coming and going in the street.
5
contamination of air by smoke and harmful gases.
6
chemicals used to kill small insects or other organisms which are harmful for crops.
7
A large town that has risen awareness about the care of the environment.
