a prehistoric time when people used stone tools



Stone Age


trading goods and services without the exchange of money​



bartering
people who have no permanent home and move from place to place to find food, water, and grazing land for their livestock



nomad

the ancient remains of an object made by human beings and discovered during an archaeological excavation​


artifact


an animal with two legs or feet​





bipedal
an animal that eats other animals​



​carnivorous
an animal that eats both plants and animals​



omnivorous



an animal that eats grass or plants​


​herbivorous
treeless plains found near the Arctic region of North America, Europe, and Asia that have permanently frozen subsoil​




​tundra


very hot and humid regions near the equator​




tropical


the gradual process of adapting to one's environment in order to survive​




​natural selection


the external factors that influence the growth and development of people, animals, and plants​


environment
Social Studies:  Early Humanity - Flashcards


Use the flashcards to help you memorize the following terms and definitions. Then try the worksheets shown on the Social Studies Homepage. Once you are ready to quiz yourself, click the Quiz link.