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Don't panic! This is a thought that goes through every student who does IB or A Level Biology, and the answer is that there are an endless number of techniques and tricks that can help every different ...

Endotherms have a variety of physiological mechanisms which allow them to reduce their body temperature if it deviates too far away from the norm, for example after strenuous exercise. 

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1. Fertilisers are washed into waterways by rain or irrigation.

2. The increased availability of nutrients causes aquatic plant life to grow rapidly.

Some drugs need to be converted into other molecules so the body can use them effectively. This conversion is done by enzymes, which are protiens. Protiens are made up of amino acids, which are coded f...

Meiosis only takes place in the reproductive organs of plants and animals as opposed to throughout the body like mitosis. Meiosis results in the production of 4 genetically different, haploid gametes a...