Linda Sutton
May 13, 2015

Niche: an organisms role in the environment
- Birds eat insects, spread seeds, food for other organisms
- Insects pollinate plants, reduce populations, food for amphibians & birds
- Rabbits are food for other organisms
- Wolves keep rodent and other populations in check

Keystone Species: a species that other species in the ecosystem depend on for existence
- Elephants push down trees and build savannas
- Creates grasslands for many other species
- Squirrels hide acorns
- some are not gathered and grow into Oak trees
- provide food and shelter for many species
- Hippos carve out watering holes
- Provides water for other species

Habitat: where an organism lives, its home
Trout
- freshwater streams

Gestation Period: the length of time a female carries young while the young are developing
Toro, By Ross. "For How Long Are Animals Pregnant? (Infographic)."LiveScience.
TechMedia Network, 23 Sept. 2011. Web. 13 May 2015.

Natural
Selection:
4 Main Points
= environment naturally selects for organisms most fit to survive in it
"Curran, Thomas / NOTES: Natural Selection Key Components." Curran, Thomas / NOTES: Natural Selection Key Components. Warren Hills
Regional High School, n.d. Web. 13 May 2015.

"Flipper Fund." Earth Trust Program. Earth Trust Fund, n.d. Web. 12 May 2015.