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The P.S. Question First: Do people really need plants? Why are plants important to plants?
There are thousands of different kinds of plants on the earth. Plants are found in every place on earth. They are found in the desert, the jungles, polar ice caps, hot springs, the ocean, on high mountains, as well as in our backyards.
People admire plants for various reasons. Some admire their aesthetic beauty while some use plants for their medicinal benefits. The truth is that without plants, we would not be able to live. Whether directly or indirectly, plants are the primary food source for all animals, including humans.
Plants not only provide food but they provide materials necessary for the building of homes and for the preparation of clothing. They also provide fuel such as oil and gasoline. Even some of the foods we love, like ice cream, could not exist without plants.
The environment in which we live is also dependent on plants. Plants provide oxygen, a gas, that most living things need in order to live. Without plants, the air we breathe would be deadly.
There are many different kinds of plants. Some are very simple, having no roots stems or leaves. The simplest forms of plants are called algae. Algae live in the water, both fresh and salt.
Other plants depend on leaves, stems, and a root system through which to gather water and minerals. These plants include roses, daisies, and many of the foods we eat. Many of the foods we eat such as ice cream, chocolate milk, tomatoes, grapes, etc. would not exist if their were no plants.
P.S. Question Part 1: Do people really need plants?