Carnivores are

The first plants to reappear in a badly burned forest area will most probably be

Choose the correct sequence of True $(T)$ and False $(F)$ statements:
$(1)$ Zooplanktons are primary producers in an aquatic ecosystem.
$(2)$ Decomposition is largely an oxygen-requiring process.
$(3)$ In a natural ecosystem, fishes, wolf, etc., are carnivores.
$(4)$ The amount of energy decreases at each successive trophic level.

Secondary producers are

Which of the following is a man-made ecosystem?

Select the incorrect statement for the detritus food chain.