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Biology
IB

Explain two examples of evolution in response to environmental change; one must be antibiotic resistance in bacteria.

Antibiotic resistance in bacteria is a common problem. It results from the transfer of a gene that gives resistance to a specific antibiotic usually by means of a plasmid to a bacterium. Some bacteria...

Answered by Zana Katarina L. Biology tutor
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Outline the consequences of a global temperature rise on arctic ecosystems.

·      Changes in arctic conditions (arctic ice cap may disappear, permafrost will melt during the summer)

·      As the ice melts, sea ...

Answered by Zana Katarina L. Biology tutor
8369 Views

Outline the precautionary principle.

The precautionary principle holds that, if the effects of a human-induced change would be very large, perhaps catastrophic, those responsible for the change must prove that it will not do harm before ...

Answered by Zana Katarina L. Biology tutor
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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 ...

Answered by Zana Katarina L. Biology tutor
3376 Views

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:

·      Ph...

Answered by Zana Katarina L. Biology tutor
13845 Views

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