(a) indicate the three producers of this food wed (b) Identify the trophic level of each organism named below. On the diagram opposite
(i) Macrozooplankton
(ii)Wedidell seal

(c)Determine the maximum percentage of energy that may reach emperor penguins from primary producers
(d) Explain the possible effects of natural selection within the food web if conditions allowed
sudden increase in the small fish populations. What happens to the number of phytoplankt
macrozooplankton? What happens to the number of seals large fish and toothed whales!