Relationships
one organism hunts and kills another organism
predation/ predator-prey
trophic level where organisms make their own food usually through photosynthesis
Producers
The best thing for an ecosystem. Many different organisms.
Diversity
Bacteria are always harmful in ecosystems. True or false?
False
Amount of energy that is transfered from one trophic level to the next
10%
one organism benefits the other is harmed
parasitism
Trophic level composed of organisms that eat producers. Herbivores
primary consumers
Worst thing for an ecosystem. Not very many different organisms.
low diversity
Process that releases carbon into the atmosphere
combustion or cellular respiration
Producers have 19,000 kcal of energy. How much of that will primary consumers have?
1,900 kcal
organisms fight for limited resources
competition
Trophic level composed of organisms that eat primary consumers.
secondary consumers
Too much algae in an aquatic ecosystem that crowds out all other living organisms
algael bloom
Beneficial trait that helps an organism survive
Adaptation
Primary consumers have 800 kcal of energy. How much energy will be available for tertiary consumers?
8 kcal
both organisms benefit
mutualism
Trophic level composed of organisms that eat secondary consumers.
Tertiary consumers
Too many fish are being taken out of their environment reducing diversity.
Overfishing
Type of bacteria that makes nitrogen usable for plants to make proteins and nucleic acids.
nitrogen fixing bacteria
Secondary consumers have 71 kcal of energy. How much did the producers start with?
7,100 kcal
one organism benefits the other is unaffected
commensalism
Amount of energy lost moving from one trophic level to the next.
90%
Organism is moved into another ecosystem and has no predators and outcompetes other organism.
Invasive species
Photosynthetic protist found in aquatic environments that can be harmful in high populations
Algae
There is 0.5 kcal of energy in the 5th trophic level. How much did primary consumers start with?
500 kcal