Answer:
The temperature is kept at room temperature and mostly preferred to be constant, so that the temperature does't be a variable factor effecting the accuracy of experiment.
Temperature is kept constant to take it as a control factor, so that experimental results are not effected by such outside factors. Such control variables are important in experiments as they minimize the influences from outside.
Light reactions happens in the thylakoid membrane, and the calvin cycle happens in the stroma. What happens to water molecules in the light reactions? It's broken apart and the electrons go to photosystem II. ... Then they pump H+ into the thylakoids, and are used to make ATP out of ADP.
Interphase i think let me know if its right
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Basically because your skin has several layers to it (see link, below), and the layer that has the blood vessels capable of bleeding in it is further down than a superficial scrape would affect.
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Two properties of minerals would shape and size
