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38 Cards in this Set
- Front
- Back
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what was the initial working hypothesis for how plants gained mass |
the roots are the soil |
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matter |
anything that has volume and mass |
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energy |
ability to do work on usable power |
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producers |
make their own food |
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consumers |
can't make their own food |
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herbivores |
primary consumers because they only eat producers |
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carnivores |
capture and eat other carnivores |
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secondary consumer |
carnivores that eat other carnivores |
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tertiary consumer |
carnivores that eat other carnivores |
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omnivore |
feed on both producers and consumers |
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scavenger |
feed on both the bodies of dead organisms |
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decomposer |
bacteria and fungi that consumes the bodies of dead organisms and their organic waste |
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how do food chains differ from food webs |
a food chain is simple a food web is complex |
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what are food weaves in harsher areas like |
they tend to be more simple and vernable |
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what do the arrows in a food chain represent |
one ecosystem connecting to another |
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in a food chain, how much energy actually moves from one level to the next |
10% |
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explain biological magnification |
opposite of energy- when a pollutant goes through an ecosystem the concentration of the pollutant increases as it goes through the levels of the food web |
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what is the chemical formula and percent composition of nitrogen |
N2 78% |
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what is the chemical formula and percent composition of oxygen |
O2 21% |
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how does carbon enter the atmosphere |
volcanic activity, respiration, decomposition, human activities |
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how is carbon removed from the land |
volcanic activity, human activities, uplift |
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what is phosphorus necessary for |
nucleic acids, fats, cell membranes, bones, teeth, shells |
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where does phosphorus come from |
phosphorus is stored in rocks and ocean sediments |
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phosphorus is a key part of _____ and _____ |
DNA and RNA |
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why do we need nitrogen |
to build proteins |
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what is the chemical formula and percent composition of water |
H2O 0.04% |
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what is the chemical formula and percent composition of carbon |
C 0.038% |
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what do the biogeochemical cycles of matter do |
how elements, chemical compounds and other forms of matter are passed from one organism to another |
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describe the water cycle. how does water move? |
precipitation ➡️ evaporation ➡️ condensation ➡️ transformation🔁 |
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what does it mean to say every drink of water you take is "dinosaur pee" |
all the water we have is all the water we ever had |
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List the primary elements that plants are made of |
nitrogen, carbon, hydrogen, oxygen |
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List some of the processes used to cycle these elements back through soil and plants |
carbon cycle, nitrogen cycle, phosphorus cycle |
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which 2 chemical processes make up the carbon cycle |
photosynthesis and respiration |
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carbon is the key ingredient of ____________. |
living tissue |
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can organisms use nitrogen gas? explain how they can obtain nitrogen. |
nitrogen must be converted using nitrogen fixation. |
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nitrogen is returned to the soil using ___________. |
denitroficafion |
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what is eutrophication |
when lakes, steams and estuaries are over fertilized and excessive production of aquatic organic matter can become a water equality problem. as a result the eutrophication process can be advanced |
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list the six stages of eutrophication |
addition of nitrates growth of plates death of plants growth of bacteria lack of oxygen suffocation |
