April 28, 2021

Desert Biome Desert biome are extremely dry environments that are home to well-adapted plants and animals. The main types of deserts include hot and dry deserts, semi-arid deserts, coastal deserts, and cold deserts. Organ Pipe Cactus For…

Crust Earths crust The crust is the outermost layer of Earth. Earth's Crust For upon |“Crust” describes the outermost shell of a terrestrial planet. Earth's crust is generally divided into older, thicker continental crust and…

Hail 1Hail is a type of precipitation or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of Measuring Hailstones A person takes measurements of large hailstones found after a…

African Savanna For upon |African savanna An illustration gallery and information on the African savannah ecosystem. African Savanna Ecosystem Illustration African Savannah Ecosystem: Unlabeled African Savanna Ecosystem…

Confucianism Confucianism is one of the most influential religious philosophies in the history of China, and it has existed for over 2,500 years. It is concerned with inner virtue, morality, and respect for the community and its values.…

Pharaohs Pharaohs were the heads of state and religious leaders of ancient Egypt. For upon|Ancient Egyptians carved giant statues of Ramesses II and Nefertiti at the Temple of Nefertiti in Abu Simbel, Egypt. As ancient Egyptian…

Lithosphere For upon |The lithosphere is the solid, outer part of the Earth, including the brittle upper portion of the mantle and the crust. Cutaway Earth The lithosphere is the rocky outer part of the Earth. It is made up of the…

Greek City-States For upon |The Greek city-states were the dominant settlement structure of the ancient Greek world and helped define how different regions interacted with each other. Athens from the east This hand-colored woodcut…

Biodiversity For upon |Biodiversity refers to the variety of living species on Earth, including plants, animals, bacteria, and fungi. While Earth’s biodiversity is so rich that many species have yet to be discovered, many species are being…

Fossils Fossils are the preserved remains, or traces of remains, of ancient animals and plants Pterodactyl Fossil For upon|This fossil of the pterosaur Pterodactylus Kochi is preserved in limestone. Fossils of pterodactyls like…