Environment sustaniability is find means to coexist with the environment surrounding us in harmony. Fast growing trees to supplement the timber industry saves old growth trees from being cut down for human consumption.
I think that it means To make the most of our opportunities and cherish our resources (Natural Resources) which make our life what it is.
Sure you don't mean unsustainable? If something can be kept going, or sustained, it is sustainable. If not, it is unsustainable
means you live green use less water and save then environment MAN!
sustainability is something that lasts for a long period of time