Biological Evolution: Variation and Diversity

14 images of some fish such as lion fish, grouper and sharks that live in saltwater environments like oceans, saltwater lakes and aquariums

8 images of some flowerheads such as roses and water lilies whose outer petals are longer than the petals in the centre of the flower

images of some birds in the process of building their nests

10 images of some birds' nests showing various designs, structures and materials used for building them

5 images of predatory birds that hunt and feed on other animals such as eagles, the Great Horned Owl and vultures

10 images of some birds such as finches, chickadees and cardinals that produce sounds and calls in a musical way

12 images of some cold-blooded animals such as frogs and newts classified as amphibians that can live in the water or on land

11 images of some animals such as lizards and Arctic Hares whose appearance has adapted to provide protection in their environments

20 images of animal pairs such as polar bears, turtle, dogs and birds in their juvenile and adult stages of life

10 images of some animals such as bears, bats, turtles and lemurs that spend the cold weather in a dormant state

10 images of some animals such as salmon, Monarch butterflies, whales, zebras and wildebeast that move seasonally from one region to another

5 images of invertebrates such as spiders and scorpions characterized by having 4 pairs of segmented legs, 2 main body parts and simple eyes

12 images of some birds such as seagulls, puffins, ducks and Canada Geese that live on or around freshwater or saltwater habitats

4 images of some birds such as emus and penguins that have less developed or small wings and have evolved over time not to be able to fly

4 images of some birds that are heavy-bodied and ground feeders such as turkeys, pheasants and peacocks