sustainable
Do you mean wasting ( ie wasting an opportunity, or wasting food), if so then squandering is a good word.
I chose to buy biodegradable cleaning products because they break down naturally without harming the environment.
Mass wasting is hazardous and could kill you.
ahimsa
The word is "wasting" which means being used up for no good purpose. "Time's a-wasting" means the same as "you are wasting time."
Symbiosis
The single word for wasting time is "procrastination." It refers to the act of delaying or postponing tasks, often resulting in inefficiency and lost productivity.
To dawdle means to delay. You could say they were wasting time. You could also say they were dragging things out. Another word that means dawdle is idle.
wasting away
greek? if is its biology or living environment
An ecosystem is a community of living organisms and their physical environment interacting as a system.
There are 2 syllables. Was-ting.