Ecosystems Flashcards
what is interdependence
organisms that depend on each other for survival
what is abiotic
non living factors e.g light intensity
biotic factors
impact of other organisms on an ecosystem
what are producers
produce biomass
what are primary consumers
eat producers
what is the food chain called
trophic level
what happens during the carbon cycle
plants take in carbon dioxide from atmosphere and use it for photosynthesis
carbon is either passed out by respiration or passed to animals who eat the plants
animals respire and release carbon dioxide
when organisms die microorganisms decay them until carbon dioxide is released by microbial respiration
if dead organisms dont decay they turn into fossil fuels and are burned
what is biodiversity
variety of species of organsims in an ecosystems
what does a high biodiversity mean
stable ecosystem as organisms rely dependent on a greater number of organisms
why are peat bogs being destroyed
for compost
why is destroying peat bogs bad
reduces biodiversity
releases carbon diode
what does a prymid of biomas show
how much biomass is transferred between trophic levels
how to find %absorbed of biomass
(biomass at 2nd level / biomass at 1s level) x 100
what happens to biomass as you go down levels
biomass is lost because not all of its absorbed and lose it while they’re alive via excrements
