A ______ ____ is a well supported and widely accepted explanation of nature.
Scientific theory
100
The number of different species in an area is called its ________.
Biodiversity
200
The scientific theory of evolution explain how living things descended from ______ _______.
Earlier organisms
200
A ____ is a specific characteristic that an organism can pass to its offspring.
Trait
200
When all the members of a species disappear from earth, it is called _______
Extinction
300
Similar structures that related species have inherited from a common ancestor are known as _______ _________
Homologous structures
300
_____ _____ is the process by which individuals that are better adapted to their environment are more likely to survive and reproduce that other members of the dame species.
Natural selection
300
Extinction usually occurs when a species is unable to _____ within a changing environment.
Adapt
400
Scientists also infer evolutionary relationship by comparing the early development of ______ organisms
Different
400
Name one of the factors that Darwin identified that affect to process of natural selection.
Overproduction, variation, and competition
400
A _____ is the role of an organism in its habitat, or how it makes its living
Niche
500
An organism's body structures is its body plan, which in vertebrates includes how its bones are _____
Arranged
500
Scientists have identified more than __ ______ species
of organisms on earth.
1.6 million
500
Species in a diverse ____ ____ are better able to adapt to and survive changes in its environment.