1. Part
NATURAL SELECTION

2. Adaptation to natural habitat
Plants & animals adapt (fit into) natural habitat with physical features & characteristics
5 ways organisms adapt to environment

3. Food availability determines Teeth structure Herbivores Carnivores
Diet
Food availability determines
Teeth structure
Herbivores
Carnivores
omnivores

4. Raccoon skull-omnivore

5. Herbivore skull

6. Carnivore skull

7. Protection
Methods organisms have to protect from predators include (list examples)
Thorns
Sharp sense of sight or smell
Speed
Camouflage/protective coloring

8. Movement methods include Stealth mode Speed
Swim, fly, glide, swing from tree…

9. Temperature Regulation
Warm blooded vs. Cold blooded
Mammal vs. lizard
Large ears to release heat
Elephant, jack rabbit
Small ears to conserve heat

10. Ability to hold developing embryo during harsh conditions
Reproduction
Ability to hold developing embryo during harsh conditions
Mate in early spring, young born late spring/early summer
Organisms that have a longer gestation period may have to over winter with developing embryo

11. Peppered Moths
Population dominant color was whitish gray & recessive was a darker color
Tree bark used by moths for nesting was whitish gray
Moths were camouflaged from predators

12. Peppered Moths & Industrial Revolution
Increased factories
Increased burning of coal
Increased pollution
Change in Peppered Moth Population
Increased dark colored bark due to pollution
Increased dark moth pop & decreased white pop.

13. PM & IR
Introduction of air quality standards
Decreased pollutants in air
Tree bark slowly changed back to original lighter color
Population of white moths started to increase
Population of darker moths started to decline

14. Peppered Moth examples

15. Recessive trait found in humans A response to survival from malaria
Sickle Cell Anemia
Recessive trait found in humans
A response to survival from malaria
RBC is altered to limit ability to hold oxygen
Allows population to survive in areas where malaria was a health problem