Used to study ancient atmospheres.

In an undisturbed layer of rocks, the oldest layers will always be at the bottom.

Tags

NGSS.MS-ESS1-4

A symbiotic relationship where both species benefit.

A symbiotic relationship in which one species benefits and one species gets NOTHING (meaning no benefit, no harm)

An organism that makes its own energy (usually from the sun) You only have to type ONE of the two possibilities.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

An organism that must eat other organisms to survive. Can NOT produce its own energy. (Only type one of the two possible word choices, do not combine them)

An organism that breaks down dead stuff.

The LIVING parts of an ecosystem

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

The NON-LIVING parts of an ecosystem.

Tags

NGSS.MS-LS2-3

The process through which plants turn carbon dioxide into oxygen. (1 word)

Tags

NGSS.MS-LS1-6