quizzez

constraint

1. A limit to a design process. Constraints may be such things as appearance, funding, space, materials, and human capabilities. 2. A limitation or restriction.

fossil record

Chronological collection of life's remains in sedimentary rock layers

Periods

Horizontal rows on the periodic table

Fossil

The preserved remains or traces of an organism that lived in the past

era

a long and distinct period of history with a particular feature or characteristic.

citeria

a principle or standard by which something may be judged or decided

Ice Age

any period of time during which glaciers covered a large part of the earth's surface

complex

consisting of many different and connected parts

mass extinction

event in which many types of living things become extinct at the same time

extinct

no longer existing

geologic time scale

scale used by paleontologists to represent evolutionary time

presevered remains

something that is gone when it dies

Orgins

the point or place where something begins, arises, or is derived.

Biodiversity

the variety of life in the world or in a particular habitat or ecosystem.