Vocabullary #4

Ocean:a very large expanse of sea, in particular each of the main areas into which the sea is divided geographically.

Granite:a very hard, granular, crystalline, igneous rock consisting mainly of quartz, mica, and feldspar and often used as a building stone.

Bacteria:Unicellular microscopic organism, lacking a nucleus, that multiplies by simple cell division or by spores.

Insect:a small arthropod animal that has six legs and generally one or two pairs of wings.

Earth:the planet on which we live; the world.

Worms:a long, thin animal that has a soft body with no legs or bones and that often lives in the ground.

Amphibian:a cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing

Chemical:relating to chemistry, or the interactions of substances as studied in chemistry.

Asteroid:a small rocky body that orbits the sun. A large number of these, ranging in size from almost 600 miles (1,000 km) wide

Marble: hard crystalline metamorphic form of limestone, typically white with mottlings or streaks of color,

Mammal:a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young

Saber-too-cats:This is a species of feline already extinct, which belonged to the subfamily of the macairodontines, experts affirm that the saber-toothed tiger appeared for the first time in the American continent

Paleontologist:a scientist who specializes in the study of life forms that existed in previous geologic periods, as represented by their fossils.

Arthropod:an invertebrate animal of the large phylum Arthropoda, such as an insect, spider, or crustacean.

Prehistoric times:History of humankind in the period before recorded history.

Skunks:Mammal of the order Carnivores, about 45 cm long short legs, small head, sharp snout, long tail, and soft, thick black hair with white dorsal bands; lives in America, and defends itself by emitting a bad smell

Rabbits:a burrowing, gregarious, plant-eating mammal with long ears, long hind legs, and a short tail

Coyotes:Canid mammal similar to the wolf, but smaller, longer ears, sharp snout, and gray-brown fur

Limestone:Limestone is a sedimentary rock made of calcium carbonate

Reptile:a vertebrate animal of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin and typically laying soft-shelled eggs on land.