Which of the following statement(s) is/are correct?
A. Only I
B. I and II
C. I and III
D. All of the above
Answer:D
Which of the following statement(s) is/are correct?
A. Only I B. I and II C. I and III D. All of the above
Explanation: In spite of all the intelligence at its source, human beings have not been able to conquer the environment completely. Natural as well as human-made modifications in the environment have, through various periods, offered fatal blows to the human population.