| A | B |
|---|
| tough | Strong, not easy to cut or damage |
| ribs | the bones that curve around the heart and lungs, a part that supports |
| discovered | found |
| insects | bugs, small animals without a backbone |
| remains | what is left when something is over or goes away |
| saquaro | a tall, sparsely branched cactus native to the southwestern United States and Mexico |
| paloverde tree | a tree native to the desert |
| bores | to make a hole in |
| insulated | to cover or surround with a material that slows or stops the flow of electricity, heat or sound |
| nectar | the sweet liquid formed in flowers |
