Terrariums

 Closed terrariums act as an Earth surface where everything is provided by the nature. The light energy provided by the sun helps the plants in food preparation and release of oxygen and water vapor. The water vapor goes up and stays on wall of the jar. Night time plants take oxygen and release carbon dioxide during respiration process. The water vapor slowly condenses and helps the plants watered.in closed terrarium It is a cycle and it continues and helps the plants to grow just like the plants on the Earth.  some people called it as a greenhouse effect. It also a good example for children to show how our plants are growing in nature.