Answer:
Air particles are a mixture of solids and liquids that are microscopically tiny and suspended by air currents. It can stay in the atmosphere for a few hours to a month or two. Their constituents can be various harmful substances such as heavy metals - lead, nickel, arsenic, cadmium or polycyclic aromatic hydrocarbons
Explanation:
Air particles, nitrogen dioxide and ground-level ozone are now considered to be the three most polluting substances in human health. Exposure during peak concentration and long-term exposure to these pollutants can cause damage from respiratory distress to premature death.
Answer:It causes random changes and the allele frequency of certain traits may increase or decrease.
Explanation:
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Answer:
There are 2 alleles, a recessive allele and a dominant allele. The weaker allele is the recessive allele.
Answer:
Throughout the years, mice' DNA has mutated and adapted to become more likely to survive in the habitat that they are in.
Explanation:
