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Life

  • Amphibians

    Amphibians are a small group of cold-blooded, vertebrate animals. They include two main groups: the salamanders and newts, and the frogs and toads. The word...

  • Animals

    The process of evolution ensures that only living things that are suited, or adapted, to their environment will survive. An animal or plant that is poorly adapted to its...

  • Birds

    Birds are warm-blooded, vertebrate animals with four limbs, the front two of which are adapted into wings. They are the only animals that have feathers. Birds have light, hollow...

  • Ecosystems

    Animals, plants and other living things, together known as organisms, must survive together in the natural world. They depend on and relate to each other, such as by being plants...

  • Fish

    Fish are vertebrates (animals with backbones) that live in water all of the time. They have hairless, streamlined bodies with fins and a tail. Many have a protective layer of...

  • Human body

    The human body is an amazing natural machine. If you give it food, water, air and warmth, it can walk, talk, think and produce more of its own kind. Flesh and bones, blood and...

  • Insects

    Insects belong to a group of invertebrates (animals without backbones) called arthropods. Instead of having an internal skeleton, arthropods have a hard outer skeleton. This is...

  • Land invertebrates

    In every house, garden, field or forest on Earth, there is a world of activity that we seldom notice. On the ground, in the soil, in the air and in the water live many small...

  • Life

    Living things are called organisms. We know if something is a living organism, rather than non-living, from several features. First, an organism grows and develops at some stage...

  • Mammals

    Mammals are warm-blooded vertebrates: animals with backbones. Their key characteristic, one possessed by no other kind of animal, is their ability to nurture their young with...

  • Marine invertebrates

    Invertebrates are animals that do not have backbones. Many are only found in the sea. Marine invertebrates are a extremely large and diverse group that includes corals, sea...

  • Micro-organisms

    The commonest living things are bacteria. They are too small to see without a microscope. Bacteria are all around us in their billions. They float in air and live on icy...

  • Ocean life

    Although the oceans make up by far the largest biome on Earth, only about 20% of Earth’s species live in the oceans, of which about 90% are bottom-living, shallow-water...

  • Plants

    The second largest kingdom of living things after animals is the plants. The key feature of a plant which sets it apart from other living things is that it obtains energy by the...

  • Reptiles

    Reptiles are cold-blooded animals with scaly skins. They include snakes, lizards, turtles and crocodiles. Most reptiles lay eggs, either soft and leathery or hard-shelled, but...

WHAT MAKES
SOME DRINKS FIZZY?


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