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density=(formula)

mass/volume

density

amount of material in the volume of an object

Natural hazard

non-human related object, process, or situation that could cause loss of life, personal injury, and/or loss of property

Pollution

the concentration of any substance or form of energy reaches a proportion that adversely affects animals, plants, or people.

inference

interpretation of observations

mass

amount of matter in an object

volume

how much space an object occupies

interface

boundary between areas of different properties

dynamic equilbrium

opposing forces or actions balancing out

change

occurs when the properties or characteristics of part of the environment change

observation

Perception of some aspects of the environment by one or more human senses.

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