Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.
B. The U.S stock market crash and Franklin D Roosevelt’s policies
Chemotherapy is a term which we usually related to the treatment of cancer. In cancer the malignant cell keeps on dividing themselves and also infect the near by cell to enter into a phase of no restrictive division. In chemotherapy, a drug or medicine either individually or in combination with other medicines is either directly introduced in the blood or is injected only on the targeted cell. The chemotherapy interacts with the cell division process of the cell directly or indirectly. In the direct process the cell division process either mitosis or meiosis is impaired or the essential hormones or enzymes required for cell divisions are attacked through cytotoxic drug. It also inhibits cell division through apoptosis strategy where the cancerous cell starts dividing themselves. The chemotherapy process is to be done regularly over a certain period of time. Usually the treatment course occurs from a day to few weeks’ time. The dosage of chemical is given either orally or injected into the body fluid or either through intravenously.
Apart from benefits there can be several side effects of chemotherapy:
a) A patient may get pucky feelings and in some cases may have nausea or vomiting
b) There are also chances of hair loss.
c) It can also adversely affect the skin, as it may get dry or oversensitive.
d) The blood platelet count may decrease
e) There can be chances of hearing and vision impairment.
Answer:
The correct answer is - 2. Helium.
Explanation:
Nuclear fusion is a reaction that involves the fusion of two or more atomic nuclei to make different atomic nuclei with subatomic particles and releases a huge amount of energy.
Two hydrogen molecules with one proton and one neutron fused together to make a larger helium molecule with two protons and two neutrons and release a huge amount of energy.
1H^2+1H^2 ====> 2He^4 + energy
The following facts apply about Jupiter;
It is the largest planet (in the solar system) – 13,000 times bigger than earth
It has retrograde motion. However, the retrograde motion is actually an illusion due to the fact that the earth catches up with Jupiter planet during the revolution around the sun.
