Adaptations

In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

The Physical remains of a plant or animal preserved in rock or Earth's crust. 

• Adapt
• Fossil

To adjust to a changing environment

• Mutation
• Adapt

Most of the species found in fossil form are _______________. 

• Alive
• Extinct

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

• increase in number
  
• become extinct
  

What is another name for natural selection?

• survival of the smartest
• survival of the fastest
• survival of the biggest
• survival of the fittest

This is a period of deep sleep that occurs in some animals when outside temperatures are cold: ______

• hibernation
• migration

A nice smell is an adaptation that __________________.

• helps the plant keep water inside the leaves.
• pokes animals that try to eat the plant.
• attracts pollinators to the plant.