In biology it is when water is attracted or goes towards a most times solid surface
Fossil records show us that over time animals have 'changed' and become better adapted to their surroundings and so we can see similar characteristics in a horse from 100, 000 years ago in our present day horses. This supports the theory of evolution
Segmented exoskeleton: arthropods
taxonomists formerly looked at apperance and external features of an animal but this was often inconclusive. now they examine organisms genome