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What is eutrophication?

Eutrophication (also called algal bloom) is a massive growth of green plants in lakes and rivers, caused by the use of fertilisers in industry, washed off the land by rain.The fertilisers cause the green pla...
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Answered by Rhianna R. • Biology tutor
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Name 3 differences between a plant cell and an animal cell.

A plant cell contains the following which an animal cell does not :ChloroplastsPermanent vacuole filled with sapCellulose cell wall Animal and plant cells both contain (so cannot be any of the following):Nuc...
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Answered by Kieran G. • Biology tutor
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Outline the differences between arteries and veins? (6) marks- 3 for each

Arteries and veins are the "tubes" that carry blood around the body.Artieries have thick outer walls in order to cope with the blood passing through being under such high pressure generated by the ...
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Answered by Amber F. • Biology tutor
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Describe the process of Mitosis?

chromosomes are copied in the nucleus and condense into chromatids.2) the chromatids are pulled apart and move to opposite poles of the cell.3) the chromosomes separate.4) the cell divides5) 2 cells are prod...
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Answered by Isadora G. • Biology tutor
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Describe how animals and plants are adapted to survive in dry conditions such as deserts. For each adaptation that you give, describe how the adaptation helps the animal or plant to survive in dry conditions.

Camels are adapted to survive extremely dry conditions in deserts, where it is hot during the day and cold at night.They have the ability to go without water for long periods of time; their large humps allow...
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Answered by Dianne L. • Biology tutor
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