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These three short online lessons discuss asteroids, comets and meteors.
These three short online lessons discuss asteroids, comets and meteors.
Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not. Chloroplasts allow plants to make the food they need to live using photosynthesis.
The two YouTube videos provide an indication of the differences in dairy farming between Tanzania and South Australia.
In this lesson you will learn about:
This online resource discusses the distribution of earth's water.
These two short online tutorials discuss how the earth rotates and then the earth's revolutions.
In the first URL, the YouTube video explains why earth has spring, summer, autumn and winter seasons. The second URL summarizes the key takeaway points.
This online tutorial will explain the earth's shape and its hemispheres.
This YouTube video delves into the impact that tourism can have on a country's economy.
This YouTube video delves into the impact that tourism can have on the environment.