EVOLUTION OF THE ENVIROMENT

POPULATION

COMPETITION

• To fight for something.
• Ex : Two animals competed to get an apple.

PREDATION

• Predation means the hunting
• and consumption of another animal.
• Example: The tiger was tracking and chasing
• after a gazelle.

DISEASE

• An illness which may harm
• or kill a animal.
• Ex: The turtle had salmonella
• and died a few weeks later.

CATASTROPHIC EVENT

• A significant event (natural or man made)
• which negatively impacts a wide variety of
• organisms.
• Ex: At the end of the cretacous period a
• huge asteroid hit earth and wiped out the Dino's.