North America is bordered in the north by the Artic Ocean, in the east by the Atlantic Ocean, and in the west by the Pacific Ocean. Also, the Caribbean Sea is to North America's southeast.
<span>Ivan pavlov's experiments on the timing of associations demonstrated that two things become associated because one idea changes the value of another idea. They have common features,also occurring at the same time.</span>
A theory that has been interpreted to mean that a president can shield critical information from Congress as a result of the separation of powers is an executive privilege. The correct answer is E.
Air pollution is when unwanted chemicals and poisonous substances are added to air, making it harmful to most organisms such as humans, plants, animals, etc... and even the atmosphere.
By different human activities, we add a lot
of smoke and dust into the air.
The biggest cause of air pollution is the use of fossil fuels.
These are mainly coal, petrol/diesel, and natural gas.
For example, if you have been in the car before and are stuck in traffic,
you will see fumes coming out of many vehicles.
These fumes are poisonous gasses that make the air polluted.
