Which of the following statements is/are correct?
(i) Growing the same crop repeatedly in a particular area is known as polyculture.
(ii) UNESCO has declared the Sundarbans a World Heritage Site in 2002.
(iii) In parasitism, one organism benefits while the other is harmed or adversely
affected.
(iv) Organisms that cannot produce their own food and depend on other organisms
for their food are called heterotrophs.
A(ii) only
B(iii) and (iv) only
C(i), (ii) and (iii) only
D(ii) and (iv) only
IV is correct