Tag Archives: Carbon Dioxide

How does a plant make its food?

Green plants make food in their leaves in a special food-making process called “photosynthesis.” Green plants make food in their leaves in a special food-making process called “photosynthesis” (pronounced foe toe SIN three sis), a word meaning “putting together with light.” A leaf manufactures food by taking carbon dioxide from the air and water from …

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Why does a fire smoke?

We’ve all see smoke rising from a bonfire or the chimneys of factories and houses. When a log in a fireplace burns, some of the burning wood is changed into invisible gases.  These hot gases, which consist mostly of water vapor and carbon dioxide.  Are very light.  They rise up the chimney and drift away …

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How does yeast make bread rise?

YEASTS ARE THE TINY PLANTS THAT, WHN MIXED IN MOIST BREAD DOUGH, RELEASE A GAS THAT PUFFS UP THE DOUGH AND MAKE THE BREAD SOFT AND LIGHT. Bread is the oldest of all manmade foods. The earliest bread was not like the bread you are probably used to.  It was hard, flat, and dry. The …

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