Why do we need classification (taxonomy) systems?
Do plants die from old age?
Do plants eat?
How does a plant grow?
How and why do plants produce vitamin D?
How do flowers get their colors?
What would happen if all the plants died?
Rooftop plantations in buses, trains, taxi and others vehicles can help to fight pollution. Should governments encourage this in each and every country?
Many species that humans rely upon for food supply are going extinct, meaning we could go extinct ourselves. How can we save these species, and therefore ourselves, from extinction?