Planktons+and+Minamata

Not all planktons are primary producers--planktons are any organisms that are floating in water including jellyfish!

Minamata: scary disease due to over intake of mercury. Really sad!

"Treasure Child of the Sea": The fetus absorbs all the mercury from the mother, hence keeping the mother healthy and allowing her to give birth to other healthy children.

Easter island(Chile): Gigantic Muai statues, carved by people from 1500 years ago. Back then, the forest was covered in palm trees and rich soil. In 17th century--it disappeared! This is because as the population grew too large, have to build boats to travel to sea to catch dolphin. They built so many boats they even ran out of trees!

...Will this happen to Singapore? Singapore is not self-sustainable, and gets crops from other countries. When fuel runs out in Singapore(like how the trees ran out)--what will happen to Singapore? Singapore may be too small for their population--there's no carrying capacity!

How many people can the Earth support?