Roughly how many different species (of plants, animals, bacteria, etc.) do you think scientists have identified?

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10 million
500,000
two million
10,000
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Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Each hereditary trait corresponds to