Sci 7th CHp. 6 Section 1

A ______ is the preserved remains or traces of an organism that lived in the past.

• species

• fossil

• adaptaion

• evolution

A _____ is a group of similar organisms that can mate with each other and produce fertile offspring.

• species

• fossil

• adaptaion

• evolution

An _____ is a trait that helps an organism survive and reproduce.

• species

• fossil

• adaptaion

• evolution

The gradual change in a species over time is called _____.

• species

• fossil

• adaptaion

• evolution

Any difference between individuals of the same species is called _____.

• scientific theory

• natural selection

• variation

_________ is the process by which individuals that are better adapted to their environment are more likely to survive.

• scientific theory

• natural selection

• variation

A _____ is a well tested concept that explains a wide range of observations.

• scientific theory

• natural selection

• variation

Darwin's ideas are referred to as the theory of _______

• evolution

• selection

• reproduction

• overproduction

A ______ is a person who studies the natural world.

• naturalist

• biologist

• scientist

More offspring that can survive is

• evolution

• selection

• reproduction

• overproduction