... out of glass or clear plastic. The purpose of a glasshouse is so plants can be grown in controlled conditions of heat, moisture, air and shade. A glasshouse works by trapping sunlight, which passes through the glass and warms the soil, air and plants inside. But the infra-red rays given off by the heated soil and plants cannot pass back out and get ... ...

• Word Count: 231
• Approx Pages: 1
• Grade Level: High School