C. Radiation and chemotherapy can kill healthy cells
Explanation: radiation causes every cell around where it is put, to die, including healthy. Chemo and radiation don’t know the difference between healthy and unhealthy
When the water enters the cells, they swell and become bowed. This causes the guard cells to bend away from each other, thereby opening thestomata. Conversely, when guard cellslose potassium ions, water diffuses out of the cells by osmosis.
Because grasslands do not have many trees, only lots of grass and flat earth. Even if there were flying birds and tree animals, there'd be very few of these, with the fact that there are almost no trees at all in grasslands.
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