Explain how chemotherapy aggravates the effects of leukemia.

Chemotherapy kills the leukemia cells, but releases the content of the cell into the bloodstream which cannot be filtered at once by the kidney.

Explanation: Chemotherapy can be defined as the use of drugs to treat cancer. The drugs that is given in chemotherapy flows through the bloodstream to reach all over the body.

This treatment method is only used for the people suffering from acute lymphocytic leukemia. Because of its potential side effect it cannot be used for the person who is already sick.

The chemo cells are killed by leukemia cell and the contents are released into the blood stream which are not filtered by the kidney at once. Excess amount of these substances in blood can adversely affect the nervous system and heart.

This is how the chemotherapy enhances the effects of leukemia.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.