True
the index and glossary
or on the cover, the title page and blurb
Answer:
complimenting
Explanation:
by saying something is funny and then laughing you are further proving the point.
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