Duplicate of Evolution

When using the phrase "survival of the fittest" to describe evolution, "fittest" means:

This is drawn to show the evolutionary relationship between animals

When species change over a long period of time

An extinct species that linked reptiles to birds in the fossil record.

Genetic variation, adaptation, and isolation in a population can lead to a new________

The Tiktaalik fossil provides evidence for the theory that all land animals had a ____ ancestor

Which of the following animals is not a vertebrate?

Random __________ in genes can lead to favorable adaptations in a species.

The anatomy of whale fins, human arms and bird wings are an example of:

A modern source of evidence for evolution comes from something Darwin never knew about.

How old is the earth?

Natural______ has taken place when white bugs are eaten more often than brown camouflaged bugs.

Darwin observed differences in the shape of these in finches depending on their food source.

Which of these is not a homonid ancestor of modern humans?

Darwin studied all of these subjects except:

Which species has the most recent common ancestor with humans?

The evidence for the theory of evolution does not include:

A whale's pelvis is an example of a _________ structure; it is no longer needed for survival.

This transitional fossil provided the "missing link" between sea and land animals.

When organisms with the best adaptations for their environment survive and have offspring. 

Origin of the Species was a book written by a naturalist named

An inherited trait that helps an organism survive.

When a species can not adapt fast enough to its changing environment.

Where Darwin began work on his theory of evolution.

In order for there to be variation in a species, this must randomly occur: