a state of matter in which the substance expands to take both the shape and volume of its container

the force that pulls objects toward each other

something an organism learns to do as they interact in their world

the condition of the atmosphere at a place for a short period of time, including humidity, cloud cover, temperature, wind, and precipitation

nonliving elements of the environment that influence the way that organisms and ecosystems function

two or more forces that act on an object in different directions with the same size strength; result in no change in position, direction, or motion

a substance or object that allows energy to flow through it easily

change in direction of a wave as it moves from one medium to another

the path through which electricity can flow

living components of the environment that affect the ecosystem or other living things in the environment

a form of energy which our eyes can detect

the movement of weathered material by wind, water, or ice