Question

what will happen if animals and plants disappear from the earth surface ? can the human beings survive under such a situation? why is bio-diversity nessesary and why should it be conserved ?

Answer 1

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.  

Answer 2

no human can't survive if animal and plant disappear bcz they are all related to each other and made an diversity
and it is necessary to conserve it
bcz if food chain or food web are damaged so everything is damaged so it is necessary