arthropod: a type of animal with no spine, a hard outer skin, legs with bones joined together, and a body divided into different parts, for example a spider, crab, or ant
noun hermit crabs are arthropod
paleontologist: someone who studies fossils as a way of getting information about the history of life on Earth:
noun paleontology are the people who study dinosaurs or unearth their bones
ocean: a very large area of sea
noun I swam in the ocean
earth: the planet third in order of distance from the sun, between Venus and Mars; the world on which we live
noun I live on planet earth
saber toother: a large wild cat that lived in the past, with two long, curved front teeth
noun the saber tooth is a prehistoric animal
skunks: a small, black and white North American animal that makes a strong, unpleasant smell as a defence when it is attacked
noun skunks are black and white
chemical: any basic substance that is used in or produced by a reaction involving changes to atoms or molecules:
noun synths use chemicals
bacteria: very small organisms that are found everywhere and are the cause of many diseases
noun there are good and bad bacteria
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:
noun the squirrel is a mammal
granite: a hard gray, pink, or black rock, used in buildings
noun granite is a type of stone
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:
noun I have a pet rabbit
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
noun bees and worms are insects
limestone: a white or light grey rock that is used as a building material and in the making of cement
noun limestone was a material used by the Mayans
reptile: an animal that produces eggs and uses the heat of the sun to keep its blood warm
noun turtles is a kind of reptile
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:
noun the castles of kings are made of marble
prehistoric: describing the period before there were written records
adjetive the dinosaur is a prehistoric animal
asteroid: one of many large rocks that circle the sun
noun an asteroid killed the dinosaurs
coyotes: a small wild animal like a dog that lives in North America
noun a small wild animal like a dog that lives in North America
worms : a small animal with a long, narrow, soft body without arms, legs, or bones:
noun worms kill plants
amphibian: an animal, such as a frog, that lives both on land and in water but must produce its eggs in water
noun the frog is an amphibian