unit 2 bio test Exam Best Answers 2024 -2025
With 100% Guaranteed Solutions
Organism
individual living thing(one or more cells)
population
all individuals of the same species living in a specific area
community
all the organisms living in an area
Ecosystem
all organisms biotic and abiotic factors in an area
Biotic
living
Abiotic
Non-living
biosphere
all ecosystems on earth
why study ecology?
study how organisms interact with each other and the abiotic environment
Ecology
how the ecosystem is affected by both abiotic and biotic factors
abiotic factors
light, temperature, water, nutrients, O2, wind, nitrogen
biotic factors
, food(veg. prey), predators, competitors, parasites,
biome
A group of ecosystems with similar climates and organisms
energy flows
from producers to consumers, (one-way)
nutrients cycle
through producers and consumers back to abiotic environment, energy can't be created or
destroyed
water cycle
water evaporates from earths surface, forms clouds, rain, percolates through soil, and exits to
the ocean
carbon-oxygen cycle
photosynthesis and respiration, burning fossil fuels
nitrogen cycle
bacteria fix N, convert to N2 to NH4, convert Nh4 to NO2, and convert to NO3 to N2
Problems in the water cycle
stormwater runoff, flooding, polluted drinking water, impermeable surfaces(pavement)
solutions to the water cycle
rain gardens and wetlands
problems in the carbon-oxygen cycle
carbon dioxide build up messes with the cycle, climate change
burning fossil fuels
releases more CO2 into atmosphere
solutions to the carbon-oxygen cycle
plant more trees(helps take the Co2 out), eat less meat, reduce fossil fuel use
N fixation
bacteria and lightning fix N2 to NH4
With 100% Guaranteed Solutions
Organism
individual living thing(one or more cells)
population
all individuals of the same species living in a specific area
community
all the organisms living in an area
Ecosystem
all organisms biotic and abiotic factors in an area
Biotic
living
Abiotic
Non-living
biosphere
all ecosystems on earth
why study ecology?
study how organisms interact with each other and the abiotic environment
Ecology
how the ecosystem is affected by both abiotic and biotic factors
abiotic factors
light, temperature, water, nutrients, O2, wind, nitrogen
biotic factors
, food(veg. prey), predators, competitors, parasites,
biome
A group of ecosystems with similar climates and organisms
energy flows
from producers to consumers, (one-way)
nutrients cycle
through producers and consumers back to abiotic environment, energy can't be created or
destroyed
water cycle
water evaporates from earths surface, forms clouds, rain, percolates through soil, and exits to
the ocean
carbon-oxygen cycle
photosynthesis and respiration, burning fossil fuels
nitrogen cycle
bacteria fix N, convert to N2 to NH4, convert Nh4 to NO2, and convert to NO3 to N2
Problems in the water cycle
stormwater runoff, flooding, polluted drinking water, impermeable surfaces(pavement)
solutions to the water cycle
rain gardens and wetlands
problems in the carbon-oxygen cycle
carbon dioxide build up messes with the cycle, climate change
burning fossil fuels
releases more CO2 into atmosphere
solutions to the carbon-oxygen cycle
plant more trees(helps take the Co2 out), eat less meat, reduce fossil fuel use
N fixation
bacteria and lightning fix N2 to NH4
