Answer:
Multiple areas for improvement have been identified by Roberts team.
to be honest I don't know but you're welcome
Explanation:
one two or three it could be either one of these numbers but overall you just need one or two
I think it's D not sure
Hope this helped
1.global warming
2.volcano
3.ozone layer
4.forest
5.acid rain
6.biodegradable
7.renewable energy
8.oil spill
9.endangered species