Anatomy Physiology And Hygiene : With a Special Reference to the Effects of Stimulants And Narcotics. for Use in Primary And Intermediate Schools
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In our eReader you can find the full English version of the book. Read Anatomy Physiology And Hygiene : With a Special Reference to the Effects of Stimulants And Narcotics. for Use in Primary And Intermediate Schools Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Anatomy Physiology And Hygiene : With a Special Reference to the Effects of Stimulants And Narcotics. for Use in Primary And Intermediate Schools
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To quickly assess the difficulty of the text, read a short excerpt:
How Plants Live and Grow. — Plants breathe in poisonous gases from the air and breathe out pure oxygen. Be- sides the poisonous carbonic acid gas which they take from the air, they also absorb moisture and salts from the ground.
From all these, plants form their stems and their leaves, and they grow, until we could hardly believe that the big tree has grown from a small plant with no other nourishment but what has just been mentioned. In order to do this, plants must have sunlight — they wiU no...t grow in the dark. So that what is poisonous to us is food to the plant. And in this way pure oxygen is returned to the air and the poisonous carbonic acid gas is gotten rid of.
295. Ventilation. — Ventilation means allowing impure air to escape from our rooms and letting fresh air take its place.
THE ORGANS OF VOICE AND BREATHING. 141 It is very necessary. We have already spoken of tlie effects of impure air. If a man were locked in a room and everything were tightly closed so that no fresh air could enter, no matter how much food and drink he had, he would soon die, because his breathing would be constantly making the air of the room more and more impui;e, and finally he would die from want of pure air.
What to read after Anatomy Physiology And Hygiene : With a Special Reference to the Effects of Stimulants And Narcotics. for Use in Primary And Intermediate Schools?
You can find similar books in the "Read Also" column, or choose other free books by May, Charles H to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
How Plants Live and Grow. — Plants breathe in poisonous gases from the air and breathe out pure oxygen. Be- sides the poisonous carbonic acid gas which they take from the air, they also absorb moisture and salts from the ground.
From all these, plants form their stems and their leaves, and they grow, until we could hardly believe that the big tree has grown from a small plant with no other nourishment but what has just been mentioned. In order to do this, plants must have sunlight — they wiU no...t grow in the dark. So that what is poisonous to us is food to the plant. And in this way pure oxygen is returned to the air and the poisonous carbonic acid gas is gotten rid of.
295. Ventilation. — Ventilation means allowing impure air to escape from our rooms and letting fresh air take its place.
THE ORGANS OF VOICE AND BREATHING. 141 It is very necessary. We have already spoken of tlie effects of impure air. If a man were locked in a room and everything were tightly closed so that no fresh air could enter, no matter how much food and drink he had, he would soon die, because his breathing would be constantly making the air of the room more and more impui;e, and finally he would die from want of pure air.
What to read after Anatomy Physiology And Hygiene : With a Special Reference to the Effects of Stimulants And Narcotics. for Use in Primary And Intermediate Schools?
You can find similar books in the "Read Also" column, or choose other free books by May, Charles H to read onlineMoreLess
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