Levels of Organization
smallest individual level of organization
organism
where does all energy for life come from?
the sun
all living things require ______ to live
water
Less than ___% of all carbon on Earth participates in the carbon cycle
1%
nitrogen makes up ___% of the atmopshere
78%
biosphere
What does the law of thermodynamics say?
energy cannot be create or destroyed
Define transpiration
evaporation of water from plants
What form of carbon is found in the atmosphere?
carbon dioxide
what macromolecules require nitrogen to be built
proteins and DNA
Give 2 examples of biotic and abiotic factors in a desert biome
biotic: cactus, snakes, scorpions, etc..
abiotic: sunlight, sand, rocks, etc..
what are 3 factors that affect primary productivity?
amount of sunlight, water, and CO2
Name 3 types of precipitation
rain, sleet, snow, hail, etc...
where do fossil fuels come from and what part of the carbon cycle do they contribute?
dead plants and animal matter, combustion
assimilation
What is the difference between an ecosystem and a community?
an ecosystem includes abiotic factors and communities do not
what is the difference between producers and consumers and which one is autotrophic and which one is heterotrophic?
producers make their own energy from the sun-autotrophs
consumers need to get energy by eating something -heterotrophic
Clouds are formed through what process or part of the water cycle?
condensation
Explain how erosion contributes to the carbon cycle
erosion contributes by breaking down the calcium carbonate shells of marine creatures
How does nitrogen return back to the atmosphere once it is in the soil?
denitrification
Why is a mule not considered a species?
because they are not fertile and cannot reproduce themselves
How much energy is do quaternary consumers get if producers contain 10,000,000 calories?
1000 calories
How can runoff be bad for the environment?
farmers who live near the coast can use pesticides which get washed away into the ocean and harm wildlife
what is the difference between photosynthesis and respiration
photosynthesis uses co2 and water to make glucose and oxygen and respiration uses o2 to beak down glucose for energy
what species of bacteria helps plants acquire nitrogen and where do they live?
rhizobia, in the roots of plants