Biodiversity forms the basis of human existence in which of the following ways?
(a) Soil formation
(b) Prevention of soil erosion
(c) Recycling of waste
(d) Pollination of crops
Select the correct answer on the basis of the codes given below :
1
(a), (b) and (c) only
2
(b), (c) and (d) only
3
(a) and (d) only
4
(a), (b), (c) and (d)