44. 1. Most greenhouses look like a small glass house. 2. Greenhouses are commonly found in cold countries. 3. Most greenhouses work in the same way as greenhouse gases in the atmosphere. 4. Greenhouses are often used to grow plants in a tropical region.
..................Greenhouses work by trapping heat from the sun. The glass panels of the greenhouse let in light but keep heat from escaping. This causes the greenhouse to heat up, much like the inside of a car parked in sunlight. and keep the plants warm enough to live.