Crab: a crustacean with a broad carapace, stalked eyes, and five pairs of legs, the first pair of which are modified as pincers. Crabs are abundant on many shores, especially in the tropics, where some have become adapted to life on land.
Noun: The crab came out of the sea.
Carbon: is a very abundant element. It exists in pure or nearly pure forms – such as diamonds and graphite – but can also combine with other elements to form molecules.
Noun: They used carbon dating test to authenticate the claim that the skeleton was 2 million years old.
Fossil: the shape of bone, a shell, or a plant or animal that has been preserved in rock for a very long period.
Noun: The teacher ir showing a fossil.
Amber: hard translucent fossilized resin produced by extinct coniferous trees of the Tertiary period, typically yellowish in color.
Noun: Andrea was given an amber necklace with an butterfly.
Dinosaur: are a group of reptiles that dominated the land for over 140 million years (more than 160 million years in some parts of the world). They evolved diverse shapes and sizes.
Noun: In the museum they teach me a lot about dinosaurs.
Tar: a dark, thick, flammable liquid distilled from wood or coal, consisting of a mixture of hydrocarbons, resins, alcohols, and other compounds. It is used in roadmaking and for coating and preserving timber.
Noun: Be careful with the tag.
Mold: a soft green, gray, or black growth that develops on old food or on objects that have been left too long in warm. slightly wet places.
Noun: My bread had mold and I didn't want to eat it.
Mud: earth that has been mixed with water.
Noun: The vehicles got bogged down in the heavy mud.
Trace: to find some or something that was lost.
Verb: The police are trying to trace the mother of a newborn baby found abandoned outside a hospital.
Impression: a mark made on the surface of something by pressing on object into ir.
Noun: Made an impression of the Avengers in the notebook.
Horseshoe: a shoe for a horse formed of a narrow band of iron in the form of an extended circular arc and secured to the hoof with nails.
Noun: Our horse has a horseshoe bend placed.
Sponge: a piece of a soft, light, porous substance originally consisting of the fibrous skeleton of an invertebrate but now usually made of synthetic material. Sponges absorb liquid and are used for washing and cleaning.
Noun: She washed the dirty dishes with a sponge.
Footprint: an impression of the foot on a surface.
Noun: I left my foodprint there.
Fish: an animal that lives in the water, is covered with scales and breathes by taking water through its mouth or the fresh of these animals that is eaten as food.
Noun: Several large fish live in the pond.
Trilobite: a simple, flat sea creature that lived in the earlies period of life on aerth, with a hard outer layer and a body in three parts.
Noun: Though commonly observed, blindness in trilobites remains difficult to explain in terms of adaptation.
Sediment: a soft substance that is like a wet power and consists of very small pieces of a solid material that have fallen to the bottom of a liquid
Noun: There was a brdown sediment in the bottom of the bottle.
Cast: an object made by puring hot liquid into a container and having it to become solid.
Noun: Look my cast Josh.
Mineral: is a naturally occurring inorganic solid, with a definite chemical composition, and an ordered atomic arrangement.
Noun: I learn the value of this mineral at class.
Preserved: to keep something as it, especially in order to prevent it from decaying or being damaged or destroyed.
Verb: Today I put varnish on the wood because it is a way of preserving it.