2apart from providing oxygen, trees also help in the purification of air in many cities. "Justify the statement by giving one point
Answers
Answer:
It may sound like a no-brainer to say that trees improve air quality. After all, we know that trees absorb the greenhouse gas carbon dioxide (CO₂), and that their leaves can trap the toxic pollutants nitrogen dioxide (NO₂), ozone, and harmful microscopic particles produced by diesel vehicles, cooking and wood burning.
Yet some recent studies have suggested that trees may in fact worsen urban air quality by trapping pollutants at street level. A closer look at the evidence – and how it was collected – reveals the root of this dispute, and can help us come to a more nuanced understanding of the impacts of trees on our urban environment.
First things first; it is not trees that pollute the air of cities in the developed world. As car manufacturers are all too guiltily aware, it is mainly road vehicles that cause pollution. And their impacts are compounded by the choices we make about how and what we drive.
Many features of the urban landscape influence how air moves around a city. Impervious objects like buildings, and permeable ones like trees, deflect air from the path imposed by weather patterns, such as high and low pressure systems. The urban landscape turns freshening breezes into whorls of air, which can either contain pollution near its source – where it affects vulnerable hearts and lungs – or lift it away from ground level.
Answer:
Without them, land animals couldn't live on this planet, our water cycle will be disrupted and oxygen production will be cut short. They are the main source of food so food will be scarce. in short life without plants will be very hard but again we can survive without it if we can developed as like those science-fiction aliens.