2. In several species of birds, the males show off their bright colors and long feathers. The dull colored females usually pick the brightest colored males for mates. Male offspring inherit their father’s bright colors and long feathers.
Compared to earlier generations, future generations of these birds will be expected to have a greater proportion of
(1) bright-colored females
(2) dull-colored females
(3) dull-colored males
(4) bright-colored males

4. Changes to living organisms over time
EVOLUTION
Changes to living organisms over time

5. Remember that humans have learned to breed (select) organisms, like pepper varieties.
Remember that nature selects organisms in the environment.
Remember natural selection means the best adapted (fittest) survive, reproduce, and pass their adaptations on to their offspring.

7. TIME PASSES…

8. Brown beetles are better adapted in this environment!
WHY?

9. This will sometimes cause us problems!

11. In an area of Indonesia where the ocean floor is littered with empty coconut shells, a species of octopus has been filmed “walking” on two of its eight tentacles. The remaining six tentacles are wrapped around its body.
Scientists suspect that, with its tentacles arranged this way, the octopus resembles a rolling coconut. Local predators, including sharks, seem not to notice the octopus when it behaves in this manner.
This unique method of locomotion has lasted over many generations due to
(1) competition between octopuses and their predators
(2) ecological succession in marine habitats
(3) the process of natural selection
(4) selective breeding of this octopus species

14. Let’s see if it is true that favorable traits will increase in populations over time…