The central idea is what the main thing. For this, I think the central idea is simply Cactuses.
I'm not sure what another supporting detail can be, but if there's a back side, or another page about cactuses, I can sure help! But if that's the only side, ask your parents. xD
Read her textbook, take notes in class, and go to extra study sessions
2 LETTER WORDS STARTING WITH م
ما
مخ
مر
مس
مص
مع
مل
مم
من
مو
<span>B. Education can change a person's life.</span>
B is the worst way to assess what u r the best @