<u>Answer</u>:
Delta, Forest, Plateau and stream are the natural regions.
<u>Explanation</u>:
Delta is the old stage of the running water landforms which is created at the mouth of the river. Forest is a group of trees formed in densely manner and Plateau is the landform which took several milion years to form. Stream is the running water system which originates from the glacial or mountain. Denver is one of the cities in the Colorado state and Georgia is a state in USA which is created by man made activities. North America comes under the category which is delineated by the humans.
<span>Although China's agricultural output is the largest in the world, only about 15% of its total land area can be cultivated. China's arable land, which represents 10% of the total arable land in the world, supports over 20% of the world's population. </span>
Angola's borders are fairly straight compared to borders of any other country. The coastline and the southern lines are straight while the eastern and northern borders have stair-like shape but are fairly straight too. The country looks like a gun in some way too!
Answer:
Listed
Explanation:
The three major air pollutants are Carbon monoxide(CO), Particulate Matter(PM10, and PM2.5) and Ozone(O3).
1.Carbon monoxide is colorless, odourless gas, mainly produced due to incomplete combustion of fossil fuels. CO has a great affinity for blood oxygen carrier, haemoglobin, forming carboxyhemoglobin. This substance is very harmful for humans. It can cause headache, dizziness, weakness, neusea, vomiting, and finally loss of consciousness.
2. Particulate matter(PM) are particles of certain size which when enter our body can cause a lot of damage. PMs are linked with pulmonary and cardiac disease. It initiates a lot of lungs and heart diseases. Depending upon the level of exposure PMs can also cause premature deaths.
3.Ozone is an allotrope of oxygen generally found in upper atmosphere in the stratosphere, protects us from harmful ultra violet rays of the sun. The ground level ozone (GLO) are harmful to human health. Ozone can cause risk of respiratory disease like Asthma.
