Thesis statement: Plants are important for human beings because they provide healthy food, possess medical properties and make oxygen available.
2) Provide healthy food
a) Fact of nutrition
i) Since earlier days, plants have occupied an important place in the nutrition of human beings.
ii) In fact, 90% of the world’s foods come from plants.
iii) The most known foods that come from plants are vegetables and fruits.
(a) Examples of vegetables are potatoes, tomatoes, onions, lettuces and carrot.
(b) In other hand, bananas, apples, peaches, grapes are examples of fruits.
b) Nutritional value
iv) Vegetables and fruits are high in vitamins such as A, B1, B5, B12, C, E.
v) These vitamins are vital for the human bodies because they are necessary for growth, and good health and vitality.
vi) Foods from plants give more energy to the consumers with fewer calories.
(c) For example: A salad with tomatoes, lettuces, carrots and onions has just 200 calories. In contrast, a hamburger has 500 calories, and it gives the same energy to the consumer than the salad.
3) Possess medical properties
c) Natural medicine
vii) Natural medicine has the benefits to be natural, so it does not cause patients side effects.
viii) Many herbs such as Manzanilla, ginseng, valerian, and chamomile have medical properties.
ix) It is known around the word. However, it has a prominent place in the Chinese culture, which believes largely in this type of medicine.
d) Drugs medicine
x) Many drug medicines come from plants. In fact, 80% of drug medicines contain properties from plants.
xi) Diseases such as cancer, heart attack and depression are treated with medicines from plants.
e) Plants tested
xii) Not all the plants have been tested to know their... [continues]
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