The bulk fixation of carbon through photosynthesis takes place in

What happens if green plants are removed from an aquarium?

What will happen to an ecosystem if:
$(a)$ All producers are removed;
$(b)$ All organisms of herbivore level are eliminated; and
$(c)$ All top carnivore population is removed?

$A$ food web:

Which of the following statements is correct regarding secondary succession?

In an ecosystem,the insectivorous plants are placed in