Discover the different types of cells found in animals and what their role is. Learn about nerve cells, ciliated cells, muscle cells and more. Specialised plant cells Discover the different types ...

However, Darwin proceeded to point out the existence of a variety of living organisms that possess "lesser" versions of eyes and light-sensitive structures that he argued represent plausible ...

Bacteria are among the smallest living things. A single bacterium consists of just one cell. Not all bacteria are harmful. There are different unicellular organisms and types of bacteria.

Biodiversity is the variety of all living things on Earth ... It would be impossible to count and study all the organisms in a habitat. We therefore take a representative sample, which is a ...

preserves and protects organisms and their habitats, and so maintains biodiversity. It is important to conserve the variety of living organisms on Earth. There are moral and cultural reasons for ...

Bacteria are among the smallest living things. A single bacterium consists of just one cell. Not all bacteria are harmful. There are different unicellular organisms and types of bacteria.