You are presented with the question "Greenhouses are used to what, using the energy from the sun?" and the following answer choices: 
- heat skin
 - evaporation
 - protect plants
 - cool air
 - spread flower seeds
 - important habitats
 - food and shelter
 - reserve water

Now knowing that agreenhouse is used to protect plants by keeping them warm and energy from the sun keeps the earth warm, enables plants to grow, choose the best answer.


 

   protect plants      