The world of plants, animals, and other living things in earth's land and waters
A ridgelike mass of rock, gravel, sand, and clay carried and deposited by a glacier
A thick layer of mostly solid rock beneath the earth's crust that surrounds the earth's core
Rain whose high concentration of chemicals, usually from industrial pollution, pollutes water, kills plant and animal life, and eats away at the surface of stone and rock; a form of chemical weathering
A group of places that is defined by people's feeling and attitudes
The process by which the actual chemical structure of rock is changed, usually when water and carbon dioxide cause a breakdown of the rock
The idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride
A group of places connected by movement, for example, the region drained by the Amazon River and its tributaries
The layer of gases, water vapor, and other substances above the earth
A huge, slow-moving mass of snow and ice
The water contained in oceans, lakes, rivers, and under the ground
The solid, rocky, surface layer of the earth
A viewpoint that is influenced by one's own culture and experiences
The movement of weathered materials, including gravel, soil, and sand, usually caused by water, wind, and glaciers