Examples of range of variations observed in daily life are:
→ Organisms vary greatly in size-from microscopic bacteria to
elephants, whales and large trees.
→ The colour of various animals is quite different. Some worms are even
colourless or transparent. Various types of pigments are found in plants.
→ The life span of different organisms is also quite varied. For example,
a crow lives for only 15 years, whereas a parrot lives for about 140 years.