Answer: Mutation can affect an organism by resulting to a change in the number and structure of chromosomes (chromosomal mutation). A typical example of this type of mutation is Down's syndrome where the individual contains 47 instead of 46 chromosomes.
Mutation can also result to a change in the nucleotide sequence of the DNA molecule in a particular region of a chromosome(Gene mutation) an example of genetic mutation is sickle cell anemia
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Scientists estimate that at least 99.9 percent of all species of plants and animals that ever lived are now extinct.
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Answer:Mostly in Africa but can also be found in Asia, Europe, and Antarctica.
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It is most likely an air and water pollutant.
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The continents are separated with water and air. Therefore, if a pollutant is released from one continent, it could have transported to the other continent via water and air. Although the effect of air is less due to dispersing of air masses, it still have a chance to transport the pollutant at far distance. This phenomenon can also be related with the <u>transboundary pollution</u> where a pollutant travels to another place. For example, many persistent organic pollutants have beend detected in the bodies of polar bears living in arctic.
