granite: a very hard, grey, pink, or black rock, used for building
part of speech: noun. The house is made of granite.
limestone:a white or light grey rock that is used as a building material and in the making of cement
part of speech: noun. The margins of some of the limestone blocks are slickensided.
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
part of speech: noun. My mom like all the things that are made of marble.
paleontologist: someone who studies fossils as a way of getting information about the history of life on Earth
part of speech: noun. Palaeontologists can now look inside fossils without damaging them.
prehistoric times: describing the period before there were written records
part of speech: noun. Dinosaurs are part of prehistoric time.
amphibian: an animal, such as a frog, that lives both on land and in water but must produce its eggs in water
part of speech: noun. The frog is an amphibian animal.
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
part of speech: noun. The four tree species had distinguishable arthropod species compositions and community organization.
bacteria: very small organisms that are found everywhere and are the cause of many diseases
part of speech: noun. There are a lot of baterias in the trash
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
part of speech: noun. Ants, beetles, butterflies, and flies are all insects
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
part of speech: noun. Humans, dogs, elephants, and dolphins are all mammals, but birds, fish, and crocodiles are not.
reptile: an animal that produces eggs and uses the heat of the sun to keep its blood warm
part of speech: noun. There was a fashion for keeping reptiles as pets.
worms: a small animal with a long, narrow, soft body without arms, legs, or bones
part of speech: noun. The kiwi bird eats worms, other invertebrates, and berries.
asteroid: one of many large rocks that circle the sun
part of speech: noun. Scientists are hoping an asteroid will clue them in about early life on earth.
earth: the planet third in order of distance from the sun, between Venus and Mars; the world on which we live
part of speech: noun. Mercury, Venus, Earth, and Mars are called "rocky planets".
ocean: a very large area of sea
part of speech: noun. These mysterious creatures live at the bottom of the ocean
chemical: any basic substance that is used in or produced by a reaction involving changes to atoms or molecules
part of speech: noun. hey use special chemicals to accelerate the growth of crops.
