Earth's Spheres

the layer of gas surrounding planet Earth, containing gases such as nitrogen and oxygen

a feature on the surface of Earth, such as a mountain, hill, dune, ocean, or river

a community of living and non-living things in their natural environment

all the water in the air, oceans, rivers, lakes, ice caps, soil, rocks, and organisms of Earth

the sum of all living matter

a living thing

sand or small pieces of rock broken down by weathering and deposited on land or in water

the portion of Earth that includes Earth's interior; rocks, minerals, and landforms

actions by one thing that has an effect on another thing

rock heated to a temperature that is hot enough to turn it into a thick liquid