Not Enough Startups
Everything in life is like a tree. It all starts with a seed. Provided the right conditions, the seed sprouts and grows into a well rooted tree. However, all trees require constant attention, from pre-seed until maturity, so as to provide fruit and continue to mark a spot on Earth for centuries. Trees are our air. They are our homes. They give life, raw materials and fruits even in these times. Although the common perception is that these trees will never "run out" but if we continue our wasteful system, we will all perish.
Source: Indoor Gardening Hydroponics