The positive and negative effects of cars
Advantages of cars The cars are very useful & helpful to the human in the life, They can transport the people to important places such as the work, the hospitals & the schools, but...
Tagged: Environmental pollution
Positive and negative effects of chemical pesticides
The chemical pesticides cause the chemical pollution for the soil, the water & the air, they cause serious health risks such as cancer, the nervous system diseases and the reproductive problems in people who...
Dinosaurs’ extinction, Causes of old and recent extinction
Scientists witnessed five mass extinctions, and some scientists believe that we live in the sixth extinction age (The Recent Extinction), where the rate of extinction is 40 times larger than the normal rate of...
