Natural selection
is random
favors organisms well adapted to the environment
cannot work if beneficial traits are not hereditary
is often called survival of the fittest

What adaptation is apparent in the bodies of the three tortoise species shown in figure 16-2

2. what process do mrna and trna work together to complete? (3 points)

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen