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a system formed by the interaction of a community of organisms with their physical environment
only 10% of the total energy produced at each trophic level is available to the next level. The amount of energy passed up to the levels of the food pyramid reduces as you go up.
Type 1 survivorship
when the young have a high probability of living and deaths are concentrated later in life - humans and elephants
Type 2 survivorship
death UNRELATED to age. ex) songbirds, seagulls + small mammals. many young dont survive.
Exponential growth curve
j-shaped curve showing the rapid increase in an exponentially growing population
Logistic growth curve
phase A is exponental growth, Phase B is when population reaches carrying capacity and stops increasing rapidly
the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it (usually not fatal damage)
the relation between two different kinds of organisms when one receives benefits from the other without damaging it
Bacteria that change dissolved ammonia into nitrite compounds or nitrites into nitrate compounds.
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