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Originally Posted by Saqib Riaz
@wshaikh
Well i think that at night plants absorb the oxygen.
So sleeping under the tree is dangerous because plants absorb oxygen which can be sufficient for a man so that's why it is prohibited to sleep under the tree at night.
Correct me if i am wrong
Regards
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no sir u r absolutely right
actully at night photosynthesis process (in which carbon dioxide is used and plants exile oxygen ) is not occuring so at night plants use only oxygen 4 respiration and exile carbon dioxide so its dangerous
Quote:
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Originally Posted by Saqib Riaz
Next Question is
Eugenics is the study of
a. Altering humans beings by changing their genetic components
b. People of European origin
c. Different races of mankind
d. Genetics of plants
Regards
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i think so option A is write ans ------- am i right?
Altering humans beings by changing their genetic components is called eugenics
next ques is
if we heat up an iron spring from a side even it get red ---y the otherside is not getting red or heat up? what is the reason?