Choices: 1. mussels 2. Species 3. organisms 4. lights 5. bushes 6. rocks 7. Oak 8. hats
Given those answer options, answer the question: Fact 1: Agreenhouse is used to protect plants by keeping them warm. Fact 2: Another well known plant is the Mesquite Bush. Given the two facts above, what can a greenhouse protect by keeping warm?
A:
5.