The correct answer is option Selective breeding.
The selective breeding is a technique, in which two different individuals having a specific desired phenotype is present. Both the individuals have different desired phenotype. They are crossed together, so that a progeny having both type of phenotype or trait is obtained.
Hybridization, cloning and recombinant DNA technology emerged years after the introduction of selective breeding. These are very new tools used in DNA technology, whereas, selective breeding was from ancient times.
Potassium loss is the main electrolyte imbalence, along with Calcium, Sodium, and magnesium
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Excessive use of phosphate is running down supplies and is also causing widespread pollution that leads to dead zones in rivers and seas. According to epa.gov, too much phosphorus in the water can have diverse and far-reaching impacts on public health, the environment, and the economy.
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Answer:
recombinant DNA molecules
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