Polluting the earth with garbage
And too many greenhouse layers can harm the ozone layer.
autism
Air masses have the properties of the land below it. Because of this, different temperature air masses colliding can cause high or low pressure. High pressure usually causes cool sunny days, low pressure usually causes warm cloudy/rainy days.
C. 6.81x10^-4
It is negative 4 because the 6 is 4 digits away from the first 0.
Scientific notation has one number and then the decimal place so it can not be A or E.
The falaj system in was used to transport water to farms and villages
