Answer: Option (c) is the correct answer.
Explanation:
Polar bear has two layers of fur and a thick layer of fat called blubber. These layers help a polar bear to maintain warmth in his body.
These layers keep the temperature of polar bear about .
Therefore, we can conclude that out of the given options, thick fur is the trait which enables a polar bear to survive in an extremely cold climate.
Answer:
0.1 is the retention factor.
Explanation:
Distance covered by solvent ,
Distance covered by solute or ion,
Retention factor is defined as ratio of distance traveled by solute to the distance traveled by solvent.
0.1 is the retention factor.