Most remains of animals and plants on land can not survive because of ()

A. a scientist as well as a naturalist
B. a naturalist but not a scientist
C. no more than a born naturalist
D. first of all a scientist

A. is essential to the well-being of society as a whole
B. can provide the solution to many of our social problems today
C. can protect our environment from being polluted by industry
D. can provide us with more natural resources for industrialization