Answer:
Mutations caused by enviromental factors.
Explanation:
All the other answers choices have to do with more than one gene.
The function of the digestive system<span> is </span>digestion<span> and absorption.</span>Digestion<span> is the breakdown of food into small molecules, which are then absorbed into the body. The </span>digestive system<span> is divided into two major parts: The </span>digestive tract<span> (alimentary canal) is a continuous tube with two openings: the mouth and the anus.</span>
Phosphorus is an essential nutrient for plants and animals. Phosphorus is a limiting nutrient for aquatic organisms. Phosphorus forms parts of important life-sustaining molecules that are very common in the biosphere.
Carry out and experiment.
E.g. put a cut stalk into a beaker of colored water. The color of the water can be red, blue, yellow, etc.
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