Sagot :
Answer:
1.
before - Blue skies on high no longer clear
after - Now dimmed, obscured, pollution's haze.
before - Crystal clear our waters gleamed
Crystal clear our waters gleamedFish abundant, rivers streamed, Ocean floors sandy white
after - Now littered, brown, pollution's plight.
before - Trees towered high above, Trunks baring professed love, Birds chirping from sites unseen
after - Gone, paper joined pollution's team.
2. the main cause of these changes or harmful effect in our environment is POLLUTION
3. Our waters, skies, wildlife and trees, For once they're gone, don't you say Consider yourself warned of that fatal day.
Explanation:
(⌐■-■)