Natural resources - class-X
Casual Mode - Take your time!
1 / 24
Correct
0
Incorrect
0
Score
0%
Multiple Choice
What is the amount of average price tag on nature's life support services determined by Robert Constanza and his colleagues?
- US $\$$ $3$ trillion a year
- US $\$$ $13$ trillion a year
- US $\$$ $23$ trillion a year
- US $\$$ $33$ trillion a year