Is there a big tree behind the house?
It is good to have a big tree behind the house for shade.
Expand: Trees are tall woody plants, represented by "branches", "stems" and "leaves", and can survive for decades. Arbors are generally called trees. They have an obvious upright trunk. The plants are generally tall and their branches are higher from the ground, forming a crown. There are many kinds of trees. In common parlance, larger shrubs are also called "trees", such as pomegranate trees, tea trees, etc.
Classification: Trees are the general term for woody plants, which can be divided into trees, shrubs and woody vines. Trees are mainly seed plants. Among ferns, only tree ferns are trees. There are about 8,000 species of trees in China. Divided into banyan trees; poplar trees; willow trees; cypress trees, etc.
The role of the tree kingdom can improve the quality of the environment that humans rely on for survival. The tree kingdom and green plants are constantly performing photosynthesis, consuming carbon dioxide and producing fresh oxygen; more than 60% of the oxygen in the air comes from trees and green plants on land. Therefore, people compare trees and green plants to "oxygen manufacturing factories." "Fresh air processing plant". There are many trees in the tree kingdom that can secrete fungicides to kill various germs in the air; they can also absorb toxic gases emitted by industrial production, retain smoke and dust that pollute the atmosphere, and eliminate noise pollution that is harmful to humans.