Lecture 5 Flashcards
In some organisms potential energy is stored in
glucose
Kinetic energy is energy of
motion
True or False; Every time energy is converted some is lost as heat
True
2 Laws of Thermodynamics are
1) Energy cannot be created nor destroyed but only changed from one form to the other
2) In any energy conversion there will be some lost as heat
As energy moves up on the tropic levels of the food chain what happened?
Some energy is lost
In terms of amount or organisms in a food chain, what trend can we predict
As we look higher and higher at the food chain there will be less and less amounts of organisms
Are Nutrients recyclable ?
Yes
What are the cycles that move chemicals around the biosphere called?
Biogeochemical
Describe the nutrient cycle
Nutrients —> Producers —-> Primary consumers ———> Secondary consumers —–> Dead material ——-> Decomposers ——-> Nutrients in the environment ——> REPEAT
Define a stable ecosystem
Things change but only a little day to day, month to month or annual cycles but generally stay the same
3 things needed for a dynamic equilibrium are
1) Total number of living species is constant or close to, year after year
2) The same species are present every year
3) The population of each species is roughly the same year after year
What are 5 biological growth factors?
a) Reproductive rate
b) Adaptability
c) Ability to migrate
d) competitiveness
e) Food supply
What are two Abiotic growth factors?
a) Favorable light conditions
b) Favorable temperature/moisture
What are 4 Biological reaction factors
a) Predators
b) Parasites
c) Food shortages
d) Loss of Habitat
What are 3 Abiotic reaction factors
a) Bad weather
b) Water shortages
c) Pollution
