The answer to <span>Which two essential elements of geography are missing from this text is Places & Regions.</span>
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
1. can be made up by a hearing person.
2. a physical or personality trait
3.agent marker
4. write (agent marker is just like an er on the end it means person doing something. so write would be the right answer.)