they are useful in agriculture because of their genetic diversity
Hunt, barnett, and branch (1971) showed that between 60 and 70% of the individuals treated for alcohol, tobacco, or heroin abuse in abstinence-oriented programs had returned to their primary substance use three months after treatment. This study suggests that the relapse dynamic cuts across different substances of abuse and may be a fundamental aspect of all addictive behaviors, at present, abstinence is not a reliable or viable method for the treatment of addictions.
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People have different skin colors mainly because their melanocytes produce different amount and kinds of melanin. The genetic mechanism behind human skin color is mainly regulated by the enzyme tyrosinase, which creates the color of the skin, eyes, and hair shades.
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Yes. Unicellular organisms died because of a change in temperature, which is an environmental change. If the environment on Earth changes too much, it will affect living things. If the changes are too drastic, life may not be able to survive.
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