what are 3 forms of economic growth that is enviormentally unsustainable?

Question

i am in an enviormental analysis class
and i have this question that i cant really understand

Answer 1

Mining, nonrenewable forms of crop farming i.e. farming until the land is spent and then moving on, and logging. Also importing garbage- even if you incinerate it, eventually your environment is just too polluted, and landfills have problems too.

Answer 2

Growth based on mining would be one.
(Whatever you happen to be mining will eventually run out)

Growth based on logging would be another,
and growth based on oil would be another (using the same facts).

Logging is renewable, but not at a rate that it can feed an economy sufficiently.