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Respiration can be broken down into 'aerobic' and 'anaerobic' respiration. Aerobic respiration needs oxygen to be carried out, whereas anaerobic respiration takes place without oxygen. Glucose is broken d...

Biodiversity is defined as the range of different organisms that live in a particular ecosystem (the living and non-living components of an area, and how they interact to produce a syste...

This sort of question would usually be a 5 mark question. Speciation is the process of forming a new species. The first stage is when a population is geographically separated so they can no longer interbr...

Natural selection is part of Charles Darwin's theory of evolution.
It is when a species adapts to changes in the environment, allowing...

Respiration is needed in order for ATP to be produced by the body in order for it to carry out a variety of functions. In order for the process of repsiration to occur oxygen is needed. Oxygen is inhaled ...