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Leaching is the process by which nitrates and other organic molecules can reach lakes from fields. This may be due to a large amount of fertiliser being applied or heavy rain causing the fertiliser to was...

Respiration refers to the process of converting food substances such as glucose into energy which the cell can use.

There are two types of respiration - aerobic and anaerobic respiration....

Eutrophication is due to high levels of nutrients (nitrates) in the water. This leads to increased growth of algae and other plants which leads to "algal blooms". This is where the surface of...

Ectotherms, including reptiles and amphibians, are organisms that don't possess the ability to generate sufficient heat to keep themselves warm. As such, they are dependent on environmental sources of ...

Anaerobic respiration is the release of small amounts of energy in the cells by breaking down food substances in the absence of oxygen.