Arrange the following biomes in the increasing order of primary productivity :
(a) Savannah
(b) Boreal forests
(c) Temperate forests
(d) Temperate grasslands
Choose the correction option :
1
(a), (c), (b) and (d)
2
(c), (b), (a) and (d)
3
(c), (a), (d) and (b)
4
(d), (a), (b) and (c)