20-2021 T-Math-Gr8Reg-T5-CBT: Section 2 - Students m Ris the midpoint of OP and QR is perpendicular to OP in the diagram below.
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Find the length of QR.
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scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: