Assertion : Currentyl the 'Sixth Extinction' is in progress
Reason : The current species extinction rates are estimated to be 100 to 1000 times faster than in the pre-hu-man times and our activities are responsible for the faster rates.

Which among the following statement/s is/are INCORRECT? I. Since the origin and form diversification of earth there were four episodes of extinction. II. The current rate of extinction is 100 to 1000 times faster than in the pre-human times. III. Ecologists warn that if the present trend continues, nearly one-fourth of all the species on earth might be wiped out within the next 100 years.

Which among the following statement/s is/are INCORRECT? I. Since the origin and form diversification of earth there were four episodes of extinction. II. The current rate of extinction is 100 to 1000 times faster than in the pre-human times. III. Ecologists warn that if the present trend continues, nearly one-fourth of all the species on earth might be wiped out within the next 100 years.

Anthropogenic extinction is causing the ' sixth extinction ' . It is ______________ times more faster than the extinction which occurred in pre - human times .

The rate of a certain biochemical reaction catalyesd by an enzyme in human body is 10^4 times faster than when it carried out in the laboratory. The activation energy of this reaction :

The rate of a certain biochemical reaction c arried by enzymes in human body is 10^(3) times faster than when it is carried in the laboratory. The activation energy of the reaction:

Assertion (A) : If the activation energy of a reaction is zero, temperature will have no effect on the rate constant. Reason (R ): Lower the activation energy, faster is the reaction.