Insect: a type of very small animal with six legs, a body divided into three parts and usually two pairs of wings, or, more generally, any similar very small animal.

rabbits: a small animal with long ears and large front teeth that moves by jumping on its long back legs, or the meat of this animal eaten as food.

Limestone: a white or light grey rock that is used as a building material and in the making of cement.

Bacteria: very small organisms that are found everywhere and are the cause of many diseases.

chemical: any basic substance that is used in or produced by a reaction involving changes to atoms or molecules.

Amphibian: an animal, such as a frog, that lives both on land and in water but must produce its eggs in water.

saber-toothed cats: any of various extinct carnivorous cats (such as genus Smilodon) that were widely distributed in the Oligocene through the Pleistocene of both the Old and New World, are characterized by elongation of the upper canines.

Marble: a type of very hard rock that has a pattern of lines going through it, feels cold, and can be polished to become smooth and shiny.

earth: the planet third in order of distance from the sun, between Venus and Mars; the world on which we live.

asteroid: an object like a very large rock that goes around the sun like a planet.

Ocean: a very large area of sea

Mammal: any animal of which the female feeds her young on milk from her own body. Most mammals give birth to live young, not eggs.

skunks: a small, black and white North American animal that makes a strong, unpleasant smell as a defence when it is attacked.