- AEarth
- BSolar-system
- ✓Universe
- DContenents
Origin of Universe There are several theories regarding the origin of universe but most accepted is Big-Bang theory.
Big-Bang Theory This theory was proposed by Abbe Lemaitre in $1931.$ According to the Big-Bang theory about $15$ billion years ago, cosmic matter was in a condensed form. Explosion took place which broke the condensed matter and scattered its fragments into space at an enormous velocity making a Big-Bang sound and thus the theory came to be known as the Big-Bang theory
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$I.$ Cancer can be detected by the use of antibodies against cancer specific antigens for certain type of cancer
$II.$ The tumor cells are surgically removed to reduce the load of cancerous cells
$III.$ Certain chemotherapeutic drugs are used to kill the cancerous cells, but majority of the drugs have side effects like hair loss, anaemia, etc.