3rd Quarter Part 6 Science

The _, proposed by Charles Darwin in 1859, explains how genetic traits of a species may change over time due to the variation and adaptation of individuals to their environment.

When did Charles Darwin proposed the theory of natural selection

The theory of evolution is supported by evidence from numerous scientific disciplines. But so far, there are two kinds of evolutionary evidence: _ and _.

_ evidence, like fossils, can be viewed or directly observed.

Yet, _ evidence does not rely on direct observation of evolution.

_ is the change in inherited traits over successive generations in populations of organisms. This change allowed organisms to adapt and survive in their environment.

_ are traces of organisms that lived in the past and were preserved by natural processes or catastrophic events.

_ document the existence of now extinct past species that are related to present day species.

Fossils are usually found in _.

The _ is a system used by scientists to describe Earth's history in terms of major geological or paleontological events (such as the formation of a new rock layer or the appearance or demise of certain lifeforms).