Natural Selection, Adaptation, and Evolution

Bat wings and butterfly wings are examples of

• homologous structures

• analogous structures.

• vestigial structures.

• unique structures.

How would your describe multiple species of birds feeding from the same food source at the same time?

• competition

• evolution

• natural selection

• variation

Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number
  
• become extinct
  

What is this an example of?

• diversity of species
• variation
• vestigial structures
• DNA studies

Bat wings and human arms are examples of

• homologous structures

• analogous structures.

• vestigial structures.

• unique structures.

When all of the organisms of a species have died it is called

• evolution
• extinction
• adaptation
• natural selection

Inherited trait that helps an organism survive is a(n) __________.

• Fossil
• Adaptation
• Ancestor
• Natural selection

A remnant or trace of an organism from the past is called a _______.

• Ancestor
• Skeleton
• Fossil
• Imprints

A pelvis on a whale is an example of /an

• homologous structure.

• analogous structure.

• vestigial structure.

• mystery structure.

Which layer is most likely the oldest?

• 1

• 2

• 3

• 4