a. 2 > The 23rd pair, the sex chromosomes, differ between males and females (females have two copies of the X chromosome, while males have one X and one Y chromosome). In humans, the sex chromosomes comprise one pair of the total of 23 pairs of chromosomes. The other 22 pairs of chromosomes are called autosomes. <em>Chromosomes are thread-like molecules that carry hereditary information (they are made of protein and one molecule of DNA, which contains an organism's genetic instructions).</em>
Environmental engineering is the branch of engineering that is concerned with protecting people from the effects of adverse environmental effects, such as pollution, as well as improving environmental quality
Answer:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
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Answer:
Poison is a toxin that affects your body after being consumed or somehow contaminating your skin, like poison ivy. Venom comes from a sting or bite.
Explanation:
The rock cycle is governed by the recycling of mineral phosphates that are found in the form of PO4 3- by plants. it is recycled thanks to Bacteria, plants, detritus interrelated with the mineralization, dissolution, abd decomposition of phosphates.