Artificial selection, also selective breeding occurs when humans breed individuals that have specific characteristics that they want to manipulate.
Answer:
Three examples of fossil fuels are:
1). Petroleum
2). Coal
3). Natural gas
The answer is B since the energy that the body uses or the energy we have is measured in calories.
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Answer: petroleum
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<h2>Answer:</h2>
Bacteria provide genetic engineers with <u>_vector_ </u>and <u>_host_.</u>
<h3>Explanation:</h3>
Vector are vehicles or carriers which are used to carry the gene of interest. They are usually plasmids which are bacterial circular genome which can replicate independently.
Hence bacterial plasmids are used for the insertion of gene of interest and its transfer to the host cell.
As plasmids is taken from the bacteria, so mostly bacteria is used as the host for the gene of interest.