We are going to have a closer look at air and water on Earth. The Grade 2 Science curriculum includes a strand called "Air and Water in the Environment". It is important to know that air and water are a major part of the Earth's environment. All living things need air and water to survive and any changes to air and water affect both living things and the environment. Our actions most certainly affect the quality of the air and water on Earth.
Read the following facts about air and then answer the fill in the blank questions:
Air is made of gases. The gas we breathe in is oxygen and the gas we breathe out is called carbon dioxide. Most animals do this. Did you know that the root and leaves of a plant or tree can take in air? Plants and trees do the opposite of what you do! They take in carbon dioxide. This gas is in the air. Plants and trees release oxygen back into the air. Plants and trees and humans need each other!
______________ is all around us.
No plants or animals can live without ____________________.
Air is made of _______________________.
The gas we take in is called _____________________.
When we breathe out, we release _________________________.
Plants and trees need to take in ______________________ from the air.
Plants and trees release ___________________________ back into the air.
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