biosphere
levels of organization
energy flow
cycles
Review
100
What is the biosphere?
Area of the Earth that supports life ball of life
100
What is a population?
individual organisms of the same species that share the same geographic location.
100
What is the difference between an autotroph and a heterotroph?
autotroph = collect energy from sunlight and make their own food heterotroph = gets energy from eating other organisms
100
What are biogeochemical cycles?
exchange of matter through the biosphere
100
What is biology?
study of life
200
What is a biotic factor? Give an example.
a living factor in an organism's environment
200
What is an ecosystem?
a biological community an all of the abiotic factors that affect it
200
What is a trophic level?
each step in a food chain, food web or ecological pyramid
200
What is the ultimate source of energy for biogeochemical cycles?
sunlight
200
What is the difference between qualitative and quantitative information?
qualitative = descriptive quantitave = numerical data
300
What is an abiotic factor? Give an example
nonliving factors in an organism's environment
300
What is a biological community?
a group of interacting populations
300
What is the difference between a food chain and a food web?
a food chain is a simple model of energy flow food web = interacting food chains
300
describe the water cycle. does it include mostly abiotic or biotic factors?
mostly abiotic
300
What is a stimulus? What is a response?
stimulus = external factor that triggers a reaction response = reaction to the stimulus
400
Does the biosphere include ONLY the surface of the Earth?
No. It extends several km below the surface and above the surface.
400
What is a habit?
Where an organism lives
400
What are ecological pyramids smaller at the top than at the bottom?
only 90% of the energy gets transferred from the level below
400
describe the nitrogen cycle using the words denitrification and nitrogen fixation does it include mostly abiotic or biotic factors?
biotic
400
Why do farmers put manure on their crops?
to increase nitrogen and phosphorus levels in the soil
500
What are the 3 types of symbiotic relationships and how do they affect the organisms involved?
mutualism = both helped commensalism = one helped one neither hurt nor helped parasitism = one helped the other harmed
500
What is a niche?
an organism's role in the environment
500
What are the 4 types of heterotrophs and what do they eat?
herbivore = plants carnivore = animals omnivore = plants and animals detritivore = decaying matter
500
What do plants use for energy and what do they give off?
use = carbon dioxide give off = oxygen
500
What is the order of trophic levels?
producers - primary consumer - secondary consumer - third level (tertiary) consumer
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