Types of Adaptations
Animals have developed three main types of adaptations to survive in their environments. Structural adaptations involve physical changes to an organism's body - think about the shape of a bird's beak or the colour of a butterfly's wings.
Behavioural adaptations are all about how animals act to survive. Bats using echolocation to hunt in the dark or penguins huddling together for warmth are perfect examples of this type.
Physiological adaptations happen inside the animal's body and affect things like reproduction and metabolism. Bears hibernating through winter or snakes producing venom are brilliant examples of how internal body processes can be adapted for survival.
The surface area to volume ratio is crucial for understanding how animals control their body temperature. Animals with larger surface areas lose heat faster, whilst those with smaller surface areas retain heat better - this explains why Arctic animals tend to be more compact than their warmer-climate relatives.
Quick Tip: Remember the ratio calculation: if surface area = 16cm² and volume = 8cm³, then the ratio is 16:8 = 2:1
