Answer:
<u><em>Ancestor</em></u>- Someone that you have descended from. Typically someone you are distantly related to.
<u><em>Trait</em></u>- A quality or characteristic specific to a person.
<em>Population</em>- The number of people in an area.
<u><em>Natural selection</em></u>- The process where organisms adapt to their environment (this theory was first studied by Charles Darwin).
<u><em>Artificial Selectio</em></u><u>n</u>- a process used in breeding animals or cultivating plants.
<u><em>Variation</em></u>- A change or difference in something.
<u><em>Environmental pressure</em></u>- Things that cause the environment to change.
<u><em>Heredity</em></u>- Physical or mental characteristics passed on to offspring.