All the cells in an organism should have the same no. of chromosomes i.e. in this case 23 pairs , as each cell carries the same DNA .
Gradient = difference in elevation/horizontal distance
Answer;
A. gases or particles present in high enough concentrations in the atmosphere to harm humans, other organisms and structures.
Explanation;
Air pollution is a type of pollution that occurs when harmful or excessive substances such as particulates, gases and biological molecules are introduced into Earth's atmosphere.
The burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles is the major cause of air pollution.
Answer:
The gastrointestinal tract (aka the digestive tract) is the tract or passageway of the digestive system that leads from the mouth to the anus. The GI tract contains all the major organs of the digestive system.
Answer:
As soon as you cut or scrape skin anywhere on your body, special blood cells called platelets spring into action. Platelets stick together like glue at the cut, forming a clot. This clot is like a protective bandage over your cut that keeps more blood and other fluids from flowing out.
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