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When it rains, nitrates added to the soil by fertilisers can run off into water courses, such as lakes. This is called leaching. The high level of nitrates in the water accelerates the growth of plants at...

Differences:Plant cells have cell walls, animal cells do not.Plant cells have vacuoles, animal cells do not.Plant cells have chloroplasts, animal cells do not.Similarities:Both plant and animal cells have...

The growth of most microorganisms can be divided into four different phases:Lag phase - Small populations start to replicate slowly. Replication is 'lagging' as microorganisms are adapting to condit...

(First would talk through the structure of the heart using a diagram).
Deoxygenated (lacking oxygen) blood from the body arrives into the heart via the vena cava. This empties into the right atrium a...

All cells and hence all living organisms show life functions that make them distinct from the non-living world. These include: 1.    Nutrition - the cell's ability to acquire food and res...