What is the source of energy for all organisms in a food chain?
How does energy move through a food chain
As energy passes through a community, energy is lost at each level in the food chain. Th energy is lost and cannot be reused
Pyramid of energy
Shows the relative amount of energy available at each trophic level
Pyramid of numbers
representation of the number of individual organisms in each trophic level of an ecosystem
Pyramid of biomass
The level of living tishue at each trophic level
buildup of pollutants at higher levels of the food chain
The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism.
Label the five parts of the water cycle
Accumulation, Evaporation, Condensation, Precipitation, surface run off
Describe the two cycles of the co2 cycle
Fossile fules or wood combust and give off co2 into the atmosphere to the trees.
Sugars eatn by small animals, then small animals get eatn, then poop them out and they turn into co2 and go into the atmosphere.
What organisms play a major role in moving nitrogen around
Nitrogen fixing bacteria
How nitrogen fixing bacteria move nitrogen gas out of the atmosphere
It is the fisrt step into making nitrogen usable by plants.
Where is Nitrogen in our bodys
Nitrogen is in our system as protine
when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly
the type of environment in which an organism or group normally lives or occurs
organism's role, or job, in its habitat
Competitive exclusion principle
ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same time
the struggle between organisms to survive in a habitat with limited resources
the act of preying by a predator who kills and eats the prey
a relationship between two species in which both species benefit
the relation between two different kinds of organisms when one receives benefits from the other without damaging it
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)
a species that influences the survival of many other species in an ecosystem
series of changes in the species in a community, often following a disturbance
an ecological succession that begins in a an area where no biotic community previously existed
succession on a site where an existing community has been disrupted
Birth rate does what to a population
Death rate does what to a population
largest number of individuals of a population that a environment can support
Referring to any characteristic that varies according to an increase in population density
Referring to any characteristic that is not affected by population density.
any necessity of life, such as water, nutrients, light, food, or space
tragedy of the commons
the tendency for a common resource to be overused
resource that can be replaces relatively quickly by natural process
A resource that cannot be reused or replaced in a short period of time or at all; metals, minerals, petroleum, fossil fuels
philosophy that promotes letting people use resources in wilderness areas in ways that will not damage the ecosystem