A greenhouse is used to protect plants by keeping them warm.
Retains heat in cold weather, reflects exterior heat in warm weather.
A greenhouse is used to protect plants by retaining heat.
a greenhouse is used to protect plants by doing what?
Options:
* reduced heat
* colder and wetter
* storing lawnmowers
* holding plant pots
* retaining heat
* In the winter
* food and shelter
* starting fires