B. Because a physical reaction is a change that can be seen. This particular situation is happening over a period of time, it isn’t something that happens instantly. Also I it would have been a chemical reaction, it would have mentioned something about the state of an element or the temperature or something along those lines.
A healthy immune system shows normal amounts of white blood cells.
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell. ... As metaphase continues, the cells partition into the two daughter cells.
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Answer:
In cellular respiration, stored chemical energy in organic molecules is converted to ATP molecules- 3)
