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SCIENCE

Across
An animal or plant that consumes or obtains nutrients from animals
An organism that feeds on other organisms for food
A reaction or change in a substance produced by a chemical means that result in producing a different chemical
The layers of gas that surround Earth, other planets or stars
A physical change that occurs when matter changes to another state
A characteristic of an organism that increases its chance of survival
Layering matter in a natural process
Controlled use and or maintenance of natural of natural resources, various efforts to preserve or protect natural resources
A substance made up of a combination of two or more elements held together by chemical bonds that cannot be separated by physical means
Down
The imaginary line on which an object rotates.
The smallest unit of a chemical element that can still retain the properties of that element
An organism that feeds on other organisms for food
All the population of organisms belonging to different species and sharing the geographical area.
The process of changing from a gas to liquid, the act of making more dense
The shaking of the ground caused by a sudden release o energy in Earths crust.
A star pattern identified and named as a definite group, usually making certain shapes or figures
Concentration of matter of an object, number of individuals in the same species that live in a given area.
The smallest unit of a chemical element that can still retain the properties of that element.