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Environment (animal behavior (major motivations (food, mates, protection,…

- - - - I: die old
      - ex: humans
    - - II: die @ a steady rate
      - ex: bugs, squirrels
    - - III: make more offspring
      - ex: reptiles, amphibians
- - - - near equator
      - rainforest - rainfall
      - high-temp
      - dominant canopy trees and insects, spiders and other arthropods
    - - near 30 degrees north and south
      - low precipitation
      - temp is seasonal ranging from -30 - 50 degrees Celsius
      - dominant succulents, snakes, lizards and scorpions
    - - equatorial & subequatorial
      - seasonal rainfall
      - warm temp.
      - dominant thorny plants, wildebeest and zebras
    - - midlatitude coastal regions
      - highly seasonal
      - cool temp.
      - dominant shrubs, deers, goats and rabbits
    - - areas around 30-60 degrees
      - winters - dry and summers - wet
      - winter is cold and summer is hot
      - dominant grasses, forms, large grazers such as bison and wild horses
    - - North America and Eurasia
      - precipitation varies 30-70 cm
      - winters and cold and the summer is warm
      - dominant conifers, birds, moose, and brown bears
    - - midlatitudes
      - precipitation is 70-200 cm
      - Temperature is temperate
      - dominant epiphytes, a mixed mammals and birds
    - - tops of mountains
      - precipitation varies 20-100 cm
      - temperature is cold
      - dominant mosses, grasses, wolves, foxes and bears
  - - - standing bodies of water that range from ponds to lakes
      - oligotrophic lakes tend to be nutrient-poor and oxygen rich while eutrophic lakes are nutrient-rich and depleted of O2
    - - inundated by water
      - they have a high capacity to filter dissolved nutrients and chemical pollutants
    - - stratified into vertical zones where their characteristics are their speed and volume of their flow
      - salt is higher at the mouth while headwaters are generally rich in O2
    - - transition area between river and sea
      - Lots of variation, nutrients usually make them appear like wetlands where them biome is the most productive
    - - submerged and exposed to tides
      - Oxygen and nutrient levels are generally high and renewed
    - - a vast realm of open blue water
      - oxygen is usually high and nutrients are usually low
    - - formed largely from the calcium carbonate skeletons of corals
      - corals required high O2 levels
    - - consists of the seafloor below the surface waters of the coastal zone
      - oxygen is usually present except in areas of organic enrichment