This basically covers the same things in my videos, but it's more official and probably more in tune with the actual tests
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National Bio Rules Committee Chairman
This presentation was prepared using draft rules. There may be some changes in the final copy of the rules.The rules which will be in your Coaches Manual and Student Manuals will be the official rules.
ECOLOGY – how organisms interact with one another and with their environment
ENVIRONMENT – living and non-living components
but not killed
Ecological pyramid - a graph representing trophic level numbers within an ecosystem. The primary producer level is at the base of the pyramid with the consumer levels above.
Numbers pyramid - compares the number of individuals in each trophic level.
Biomass pyramid - compares the total dry weight of the organisms in each trophic level.
Energy pyramid - compares the total amount of energy available in each trophic level. This energy is usually measured in kilocalories.
Structural, Physiological and Behavioral
help species to survive in their environment. Most organisms have combinations of all three types
There are natural causes
Man’s activities have
Litter decomposes putting carbon into the atmosphere
Increases in forest fires
Infestation by bark beetles which is killing the trees
Dead trees - tinder to fuel the forest fires and adding more carbon dioxide into the atmosphere
Plant and animals
Special environmental issues
Effect of human populations
Tree stratum- the tallest layer, 60 -100 feet high, with large oak, maple, beech, chestnut, hickory, elm, basswood, linden, walnut, or sweet gum trees
Small tree or sapling layer - short tree species and young trees
Shrub layer - shrubs like rhododendrons, azaleas, mountain laurels, and huckleberries
Herb layer - short plants
Ground layer - lichens, clubmosses, and true mosses
of methods – OFTEN MOST EFFECTIVE
ADVANTAGES AND DISADVANTAGES