General
define ecology
the study of the interactions among organisms and their environment
give an example of predation
predator chasing prey (cheetah gazelle)
what is the difference in a food chain and food web
food chain in linear, simple model, represents one way
food web represents many interconnecting food chains
what is meant by saying matter is recycled
matter moves from one thing to another
(from the abiotic parts of the atmosphere to the biotic parts)
what contribution to ecology did Theodore Rosevelt make?
established national parks
give an example of mutalism
lichen and tree
what trophic level is at the bottom of the pyramid
producers
how does carbon enter the atmosphere
from humans and animals breathing out, from combustion of fuels
what is the biosphere
give an example of commensalism
clown fish and sea anenome
90%
what would happen to the carbon/oxygen cycle if tropical rainforest continue to be destroyed
carbon dioxide will build up in the atmosphere
what is the difference in a habitat and niche
habitat is where an organism lives
niche is its role in the environment
give an example of parasitism
mosquito and human
define biomass
total mass of living matter at each trophic level
why is nitrogen fixation important for humans
what is the difference in a population and a community
population- group of organisms of the same species in the same place at the same time
community- all the populations interacting together in the same place and same time
the close relationship between two organisms
explain why an ecological pyramid is smaller at the top than the bottom
energy is lost as it flows from one trophic level to the next
identify three processes in the water cycle
percolation, transpiration, precipitation, evaporation, condensation