Biological Evolution: Variation and Diversity

Scientists have accumulated so much evidence in the theory of evolution that it is one of the most widely-accepted theories in science.

Ever wonder how fish survive in the cold waters of the Arctic and Antarctic? It’s partly because of a brilliant evolutionary adaptation.

14 images of some plants such as carrots, cabbage and leeks whose roots, stems or leaves are used for food

Learn about two taxonomy systems that scientists use to classify the life around us.

Cloning makes it possible to bring extinct species back to life. But is that a good idea?

10 images of some cold-blooded vertebrates such as snakes, lizards and alligators typically having dry, scaly skin

A study on bird feeders and beak sizes shows how an everyday human activity can affect the evolution of another species.

9 images of plants in some large naturally occuring habitats called biomes such as tundra, grasslands and boreal forests

6 images of some seedlings sprouting as one of the stages towards full plant growth

10 images showing some stages of plant growth from planting to sprouts growing to harvesting

8 images representing some of the needs of plants for healthy growth such as water, nutrients and light

12 images of some major parts of plants such as stems, roots, flowers and leaves

6 images of some seeds which are the fertilized part of a plant used for germinating new plants such as fennel, kiwis and pumpkins

6 images of insect mouthparts.

10 images of some animals that have 6 legs and 3 main body parts consisting of a head, thorax and abdomen.