Answer:
(a)
If the plants and animals disappear from the Earth's surface, then the
ecological balance will be disturbed. Without plants there will be no oxygen available
for breathing after some time and everybody will die.
(b) Biodiversity means biological diversity i.e., there are many animal
and plant species on our planet spread all over the world. These animal and
plant species, including humans, are all interdependent.
(c) Each species has its own place and role to play in the environment
and help in the maintaining the ecological balance. That's why it should be conserved.
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