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This YouTube video delves into the impact that tourism can have on the environment.
This YouTube video delves into the impact that tourism can have on the environment.
Enzymes as catalysts for reactions in biological systems; discussion of substrates, active sites, induced fit, and activation energy.
This video explains how to calculate the gradient (slope) of a straight line.
This YouTube video explains how to calculate an irregular area on a map.
This YouTube video explains how to calculate a regular area on a map.
From the extinction of the dinosaurs to humanity.
How variation can be introduced into a species.
This online tutorial guides you through what information a map shows, map legends and the different types of maps which are available.
Molecular structure of DNA. Nucleotide. Nitrogenous base, phosphate.