The natural world is filled with variety. Ecological systems can look very different in different parts of the Earth. Every ...

Examples of genetic variation in humans include blood group, skin colour and natural eye colour. Whether you have lobed or lobeless ears is due to genetic causes.

For example, we can think about blood pressure as one level in the human body. Normal blood pressure in its lagom state is 120/80 or below. If it rises to unusually high and harmful levels it ...

Variation within species affects how organisms interact with each other and their surrounding environment. For example, the size of a fish's mouth, known as its gape, determines the size of prey ...

Evolutionary psychology is just the most obvious example of science’s flaws. By Chanda Prescod-Weinstein. Aug 09, 2017 3:51 PM.

Journal of Exposure Science & Environmental Epidemiology - Variation in urinary spot sample, 24 h samples, ...