Adaptations and Communities

This lesson covers how organisms are adapted to survive in their environment, the different types of adaptation, and how organisms interact within communities. These are key concepts in the AQA GCSE Combined Science Trilogy specification (8464) — Inheritance, Variation and Evolution, linking closely with Ecology.

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What Are Adaptations?

An adaptation is a feature of an organism that increases its chance of survival and reproduction in its environment. Adaptations develop over many generations through natural selection — they are NOT acquired during an organism's lifetime.

There are three types of adaptation:

Type	Definition	Examples
Structural	Physical features of the body	Thick fur, long roots, streamlined body shape
Behavioural	Actions an organism takes	Migration, hibernation, hunting in packs
Functional	Internal processes and chemistry	Production of venom, antifreeze proteins, enzymes that work at extreme temperatures

Exam Tip: AQA (8464) expects you to identify and explain adaptations of organisms in given scenarios. Always state the adaptation, then explain HOW it helps the organism survive.

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Adaptations to Different Environments

Desert Adaptations (Hot, Dry Environments)