The trachea has an epidermis layer that acts as a barrier and protects organs from things such as : dust, mucus and also pathogens Hope that helps :)
Explanation:
Humans, since they started taming wild cows, began artificially selecting the cows that produced more milk because this trait is desirous. Humans depended on milk for food. This artificial selection by humans ensured that traits for cows for more milk production were preserved in the population of tamed cows. Humans also went further to breed the cows that produced more milk leaving out those that didn’t. Just like natural selection, artificial selection favors the desired traits in a population.
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For more on artificial selection check out;
brainly.com/question/14128683
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When Harry asks “What is different with this plant that does not grow very well compared with the other house plants?”
Mitosis
Advantages: It enables your cells to multiply quickly and produce sister chromosomes.
Disadvantages: There is little genetic variation, each generation faces the same diseases.
Meiosis:
Advantages: The crossing over of genes during meiosis results in individual variety, which is beneficial to the population's survival.
Disadvantages: It requires the use of two gametes.
