Show an aquatic food chain using the following organisms.

(Small fish, Phytoplanktons, Kingfisher, Zooplanktons)

Fill in the blanks with suitable answers from those given in the brackets.

(harmful, heavy metals, carbon dioxide, sulphur particles)

Generation of waste products which contain Mercury, Uranium, Thorium, Arsenic, and other ________ are _______ to human health and environment. _______ present in the coal will cause acid rain and the release of _________, a greenhouse gas, causes climate change and global warming.

Depict a food chain by placing the following organisms in the correct trophic levels:

(snake, grass, eagle, frog, grasshopper)

Observe the following food web:

(i) Find out the wrong statement:

a) ‘A’ is a producer

b) ‘F’ is a herbivore

c) ‘H’ is an omnivore

d) ‘I’ is a climax carnivore

Observe the following food web:

Find out how many food chains are present in the above food web.