Metals and nonmetals, Economic importance of some metals and nonmetals
Every day, we can see the matter around us which has a mass and a volume. The matter may exist as an element or a compound, The element is the simplest form of matter that can...
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Energy paths through Living organisms in food chains & food webs
There are food relations between all the living organisms, The living organisms are classified according to their feeding into the producers which depend on themselves to make their food such as the green plants...
Type of living organisms according to their feeding
The living organisms Living organisms are classified according to their feeding into the producers, the consumers, and the decomposers. The producers The producers are the living organisms that can make their own food by...
What is the difference between physical and chemical changes?
The essential difference between physical and chemical changes lies in whether the substance’s composition is altered or remains the same during the change. Understanding the differences between physical and chemical changes helps to identify...
