Answer: the answer is <u><em>A</em></u>
- Explanation: Because bears know that every time they go for food near the picnic <u>they will find some</u> there
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Mutations are random and rare changes in the DNA sequence that can both add or delete genes. (therefore, all of the answers listed above apply)
In genetics, the term mutation represents any change in the DNA sequence of an organism. Mutations can be limited to a change in just a single nucleotide ( Single Nucleotide Polymorphisms) or it can include deletions, insertions or translocation of a longer DNA sequence, sometimes even whole genes. Mutations are rare and random events, but there are some places in the genome that are more prone to genetic mutations, called ''hot spots''.
Option (d) EPA measures air quality daily is correct: -
• Option (a) incorrect because smog occurs in air with high air pollution. It usually occurs in colder weather condition and is a mixture of smoke and fog (water molecules in air).
• Option (b) is incorrect because majority of air pollution is due to carbon emission and particulate material evolved due to it and not bacteria. Some bacteria even fix air pollution through the process of bioremediation.
• Option (c) is incorrect as water treatment plants are primarily used to treat waste water so that it can be discharged in larger water bodies.
• Option (d) is correct because EPA (Environment Protection Agency) calculates Air Quality Index (AQI) for five major pollutants which are; ozone, particulate matter, carbon monoxide, sulphur dioxide and nitrogen oxide. This is done to safeguard public health and take preventive measures.
To learn more about EPA and its relation with air quality indexing, refer: -
brainly.com/question/20299710
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