Algae are simple water plants that can vary in size, colour and shape. Algae occur naturally in habitats such as creeks, rivers, lakes and damp soil and provide a food source for animals, fish and water bugs.
Animals, Plants and Algae in Wetlands
You would be surprise to know that scientists are trying to harness the power potential of algae to produce hydrogen where energy will be abundant, inexpensive and nonpolluting.
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By the way, tortoises are reptiles. In most tortoises, the outer layer of the shell is covered with large horny scales called scutes.
Reptiles
Turtle
Visual dictionary of a turtle
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