These natural phenomena are leading to major changes in marine ecosystems, as a result of ocean acidification, warming and the proliferation of oxygen-starved "dead zones".
A flood could damage it by causing erosion which harms soil, a dust storm, could make the soil worse which also meant the ground wasnt very stable if there was dust, a volcano could produce very toxic gases and block sunlight for plants which they need to grow, a forest fire could destroy all plants but the leave the soil more fertile.
The actual meaning of life is to fulfill your purpose in life and accomplish your goals. What I mean by this is, everyone has a purpose, of why they are living. None of us will be here if we all didn't have a purpose.
An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet. Less than 10% of that space has been explored by humans.