write a speech on plants and trees help us to breathe . plz help me this is very urgent
Answers
The environmental benefits of planting trees are known to all. They exhale oxygen and inhale carbon dioxide to maintain the ecological balance in the environment. They also absorb all the harmful gases and give us fresh and pure air to breathe. Planting more trees means fresher air and purer atmosphere. The growing pollution cannot be controlled but its effect can be undermined by planting more and more trees. The places inhabited by large number of trees are quite cooler compared to the concrete jungles that cannot do without air conditioners. Trees build a sheet to protect us from the harmful ultra violet rays.
Trees also serve as a habitat for birds and various species of animals. Besides, the leaves, flowers and fruits they bear are a source of food for the living beings. Planting trees means having sufficient food and shelter. This is not it. Trees help in controlling water pollution and preventing soil erosion. In the hilly areas they slow down the run off and hold the soil.
plants and trees help us to breathe
Plants produce oxygen through the process of photosynthesis, and humans need oxygen to survive.
Plants are autotrophs, they build their own organic molecules, whereas animals including humans are heterotrophs, which means they need to obtain the organic molecules that they need from their environment in the form of food.
Autotrophs, specifically plants and algae, obtain sunlight energy and convert this energy into glucose (via photosynthesis), and this process releases oxygen as a waste product.
The glucose produced by photosynthesis can then be converted into a readily usable energy, ATP (adenosine triphosphate), through the process of cellular respiration. Now cellular respiration requires oxygen and produces carbon dioxide as a waste product, so plants or algae actually do not always help in producing more oxygen.
Sorry I'm really not making any sense... I'm a student and I have a biology test today and I'm just answering this question as a sort of practice... Anyways sorry if I confused you._.