If cacti store water with waxy leaves, then what do some cacti use waxy leaves for? Answer choices: - hydration - Chemical energy - storing water - it needs them - support - survival - to stay warm - cellulose
storing water

If rocks can be broken down from ice wedging, then what can break down rocks? Answer choices: - Jellyfish - sea urchins - deltas - erosion - ice wedging - room temperature - clouds - cliffs
ice wedging

If when an electrical circuit is working properly, computers run, then computers run when what is working properly? Answer choices: - metal forks - an engine - lowered energy cost - deoxyribonucleic acid - plastic switches - objects that have mass - power ballads - electrical circuit
electrical circuit