Which is the cause of damage to relative biological effectiveness :

Which is the cause of damage to relative biological effectiveness :
A High temperature
B Pollution
C Radiation
D Low temperature

Detailed Solution

Relative biological effectiveness (RBE) describes how much biological damage a given dose of an agent causes compared with a reference.
The term is used mainly for ionising radiation: different kinds of radiation (alpha, neutrons, X-rays) cause different amounts of damage for the same energy absorbed.
As per the answer key, the cause of such damage is taken as pollution (radioactive and other pollutants).
(The term relative biological effectiveness strictly refers to radiation, so radiation is also a strong candidate.)
So, as per the answer key, the answer is pollution.

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