Answer:
climate change and pollution
Explanation:
if you're referring to in general answers, climate change and pollution are two factors.
if you're referring to the poem specifically, i'm not sure, as it's not posted.
Answer: grouped by size of rock fragments
Explanation:
edge 2020
They provide transportation.
They give people a chance to see their friends.
They can be status symbols.
They give people freedom.
They can be used for sports.
