Granite: A very hard, grey, pink, or black rock, used for building.
NOUN. This granite is great for making constructions.
Limestone: A white or light grey rock that is used as building material and in the making of cement.
NOUN. This limestone is used to make cement.
Marble: A type of very hard rock that has a pattern of lines going through it, feels cold, and can be polished to belcome smooth and shiny.
NOUN. Marble is a precious stone.
Amphibian: An animal, such as a frog, that lives both on land an in water but must produce its eggs in water.
NOUN. I don't like amphibian animals like frogs.
Paleontologist: Someone who studies fossils as a way of life on Earth.
NOUN. The paleontologist is seeing what the bones of a rabbit are like.
Prehistoric times: Describing the period before there were written records.
NOUN. Prehistoric history tells us that dinosaurs existed thousands of years ago.
Arthropod: A type of animal with no spine, a hard outer sking, legs with bones joined together, and a body divided into different parts, for example a spider crab or ant.
NOUN. There are many arthropod animals that fear.
Insect: A type of 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. I have a pet insect.
Mammal: Any animal of which the female feeds her young on milk from her own body.
NOUN. I like animals mammals.
Bacteria: Very small organisms that are found everywhere and are the cause of many diseases.
NOUN. There are good and bad bacteria.
Worms: A small animal with a long, narrow, soft body without arms, legs, or bones.
NOUN. The worms are very small.
Reptile: An animal that produces eggs and uses the heat of the sun to keep its blood warm.
NOUN. I like all reptiles but especially the iguana.
Earth: The planet third in other of distance from the sun, between Venus and Mars, the world on which we live.
NOUN. Earth is the only planet that has oxygen.
Asteroid: One of many large roks that circle the sun.
NOUN. This asteroid can destroy the earth.
Saber-toothed cats: Any of various extinct carnivorous cats.
NOUN. Saber-toothed cats are very large teeth.
Chemical: Any basic substance that is used in or producer by a reaction involving changes to atoms or molecules.
NOUN. He is doing some kind of chemical.
