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Analyze the changes in concentration of atmospheric carbon dioxide using historical records.

Recent Trends: ▪ Atmospheric carbon dioxide concentrations have been measured at the Mauna Loa atmospheric observatory in Hawaii from 1958 and has since been measured at a number of different locations globa...
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Draw and label a diagram of the carbon cycle to show the processes involved.

Carbon is one of the main elements found in all organic molecules including carbohydrate, protein and lipid. Processes : · Photosynthesis by terrestrial plants and algae (freshwater and oceans) in which atmo...
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Explain the energy flow in a food chain.

▪ Energy enters most communities as light, where it is absorbed by autotrophs (e.g. plants) and converted into chemical energy via photosynthesis ▪ Energy then gets passed to the primary consumer (herbivore)...
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Discuss the potential benefits and potential harmful effects of one example of genetic modification.

Example: The transfer of a gene that codes for a protein called Bt toxin from the bacterium Bacillus thuringiensis to maize crops. (i.e. Bt Corn) Potential Benefits: ▪ Allows for the introduction of a charac...
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State two examples of current uses of genetically modified crops or animals.

Genetically modified organism (GMO) is an organism containing a transplanted gene. Factor IX : A human clotting factor is produced by genetically modified sheep. The protein (factor IX) is expressed in milk ...
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