Thinking about what cows eat, what might the methanogens for their energy source?
436002
its the methane producing bacteria in their digestive tract.\nthey break down the oganic nutrients from the cows food, and produce methane as a waste product
987505
Yes, the scenerio depicted in "Mad Max Beyond Thunderdome" was true in theory.  Any organic material like food or poop can be used to generate methane.\n\nIf given sufficient oxygen, bacteria will oxidize hydorcarbons like sugars, proteins and fats to carbon dioxide and water.  But if there is not enough oxygen (like under the mud of a swamp, in a landfill, or a septic tank) then the bacteria power themselves off the "food" and produce methane.\n\nCan you heat your house off your septic tank.  No.  You might make 1% of your energy needs and it wouldn't be worth the bother.\n\nCan anyone make useful energy by generating methane from waste?  Yes.  A lot of landfills extract methane and run engines on it and produce eletricity.  Often they are forced to in order to reduce methane emisssions or explosive hazards but they do produce tens or hundred of kilowatts at a large landfill.\n\nCow poop to methane?  The only place cows are concentrated are at a feedlot.  Their focus is on making skinny range cattle into fattened cattle for slaughter in a few weeks.  They want to get rid of the manure quickly and devote their attention to the core business.  Energy prices would have to rise a lot to interest them in the process.\n\nHog, chicken, turkey and other CAFOs (concentrated Animal Feeding Operations) are denser, stinkier sources of poop.  The winning play there might be that sequestering away the manure to make methane also cuts down the smell A LOT and that keeps the neighbors happy.  But until enough states and countries ban current-practice CAFOs, most will go with what they've always done, IMO.\n\n-David\nKenai, Alaska
612619
Termites produce alot of Methane.\nThey are the largest source of emitting this gas into our atmosphere and contribute to the greenhouse effect and global warming.
1067304
Since this is in biology, you could be talking about food energy.  Here's how that goes:\nEvery time an animal eats a plant, only 10% of the energy in the plant is passed on to another animal that eats that animal.  So, if you eat, say, a cow, you are only getting 10% of the energy that you would be getting by eating the plant in the first place.
276202
Musk ox herds primarily eat grasses, reeds, sedges, and other ground plants that they dig through the snow to get at. Also herds, which usually number between 20 and 30, stick to wet, low-lying areas such as a river valley in the summer moving to higher elevations in winter to avoid getting trapped in deep snow.
434377
Via the carbon cycle. Green plants take in carbon dioxide from air during photosynthesis to produce a 6C sugar. Herbivores eat these green plants and carnivores eat herbivores. All animals respire and give back carbon into the air via carbon dioxide. And when all animals die, putrefying agents aid in the decomposition of dead matter and carbon compounds are taken back into the soil or given out into the air as carbon dioxide.
824349
ummm everybody seems to have the same answer but yeah\nim assuming your in gr......7 science?\njust cause thats what i am referring to right now in my head:\n\na producer: like a plant/ something that makes its own food[bottom of food chain]\n\nconsumer: an animal/ something that need food by eating something else.\nthere are a bunch of types of producers but i dont remember the names cuz it was too long ago i think it was...so i will number them\n1: 2nd lowest it only eats plants\n2: eats plants and things that eat plants [3rd lowest]\n3: things that eat plants and animals that eat plant/ plants and animals.[highest/us!]\n\nif 1 animal were to lose its habitat, the plant eater would have no food and it would die and then the 2 woulod be able to eat nothing and the 3 would be able to eat nothing cuz the animals and the plants died. its an ecosystem...ect.....symbiosism....ect..\n\nand included in that test should be some stuff about decomposition or something like that\n..\n..\nand some stuff about \nmutualism; when 2 things are benifiting \nex: the sharks and the suckers\n\n__________.[i forgot]; when i thing benifits but the other is not harmed\nex: i cant think of one right now...but it exsists!\n\nparasitism; when i thing benifits and the other is harmed\nex: a tapeworm in a human\n\nendnote: ppl will see this answer and answer it better based on my answer so *cough*i think i should get best answer*endcough* and i totaly am just typing this out of my brain what i learnt 2 years ago so i dont remember much ^_^"""
184045
A food web would go from the simplest form of life [the producer] to consumers. First draw the sun. Draw an arrow from the sun to a plant. Draw an arrow from the plant to an animal that eats it. Draw an arrow from the animal to an animal that eats the first animal. You can make it more complex and have more than one path of arrows.\n\nExample: Sun -> Grass -> Cow -> Human\n\nSun -> Grass -> Grasshopper -> Spider -> Bird\n\nYou can link these two.
701180
heifer, bovine, beluga, finback, remoras\n\nstrangest chemistry homework i've ever seen, lol
947078
As MissA excellently stated, cows (and other ruminants) require significant processing and digestion of cellulose rich material in order to garner nutrition from grass.\n\nEven with all that processing, they still only get some of the energy from the cellulose.  The rest gets passed through the system in the form of the rather high amount of poop that cows produce.\n\nHorses deal with it in another way, passing through vast quantities of low quality forage, getting the minimal amount of nutrition they can, and then passing it through quickly.  That's why horse poop is full of pretty much undigested grasses.  Elephants are the extreme end of this strategy, using massive quantities of forage, with very little nutrition per pound, but by eating so much of it, they're able to get enough energy to survive.\n\nSmaller herbivores, like rabbits, use other methods.  Rabbits practice what is known as refection, in which they actually eat their own feces.  Rather than horking it up as cud, they poop out little green pellets, eat them and send them for processing again.  The little brown pellets we see as rabbit raisins are actually the end result of several passes through the digestive system.\n\nTermites are the masters of cellulose breakdown, however.  They accomplish it with the help of endosymbiotic bacteria that are able to break apart the cellulose on a molecular level, turning it into its component sugars.  Termite guts are literally filled with these bacteria, and without them, the termites would starve.\n\nOur own digestive systems have evolved for an omnivorous diet.  We do pretty well with meat, grains, fruits, and veggies, but simply don't have the length and size of digestion chambers that would be required to break down cellulose.  If we did, we'd be built more like, well, like gorillas - with big, farty guts processing plant material all day.  Of course, some of us are closer to that ability than others already.
800849
The sources of energy to animals (including humans) are carbohydrates, lipids, and proteins.  Carbohydrates include sugars, starches, and cellulose.\nHumans can digest proteins, lipids, sugars and starches, but not cellulose.  So, we can get energy by eating plants (or parts of plants) that contain proteins, lipids, sugars, and/or starches.  We can't get energy from sources that only have cellulose.  For instance, we don't get any energy from celery or lettuce, though we can get vitamins and minerals, maybe some other nutrients also.  \nRabbits, horses, and cattle eat large amounts of plants containing cellulose as the main energy source.  They carry microorganisms in their intestines that help them digest the cellulose, breaking it down into sugars.  Some microorganisms further process these into proteins.  However, humans don't host this kind of microorganism.
995759
Peep peep peep peep. If that did not work then I would use bread crumbs or maybe sunflower seeds(unsalted of course) and if that didn't work then I would move on to cows!
185164
another answer might be that manure makes electricity but of course that goes into how our waste all the way back to the dinosaurs generates energy. how mummies found nowadays have a spark of electricity in them, But.... you wanted to know which animals "generate" electricity and I think you wanted them live so here is a site that tells which animals generate electricity and how much :\nhttp://www.sundayobserver.lk/2006/03/05/juniorob05.html
335741
This is basic biochemistry.  All cells (really, all bacteria, all fungi, all plants, all animals) use glucose or other simple sugars as a main source of fuel for energy generation.  (Some will argue that plants actually produce glucose, they both produce and consume it).  The process of glucose breakdown is glycolysis, and it generates energy in the form of ATP, and converts molecules such as NADH to NAD+.  This electron loss gets passed through the electron transport chain  in the mitocondria to generate more ATP.  \n\nCarbohydrates include complex and simple sugars.  Simple sugars can be broken down directly in cells, there are specific receptors that bring in the sugar.  Complex carbs such sucrose (a disaccryide, or a molecule containing two simple sugars) just contain more than one simple sugar in a chain.  They are broken down in the gut by specific enzymes that break the chain and release simple sugars.  Starch is a form of a carbohydrate, but not digestable to mammals, because we lack the enzyme to break it down.  Some bacteria don't though, and they live inside the gut of some mammals such as cows, and when cows eat grass, the starch is broken down by the bacteria and some of it is released into the gut.  So thats why mammalian herbavours exist.  \n\nFat metabolism.  Fats are long carbon chain connected at one end, usually three are connected to glycerol, this is called a triglyceride, and is a perferred form of storage.  Fats are broken down by chopping the carbon chain and generating energy.  Fat burning is slow and fat is a backup fuel source; the primary being simple sugars. \n\nProtein metabolism.  Proteins are digested by proteases in the gut, and the free amino acids are absorbed into the blood stream, where they can enter cells.  Cells can utilize amino acids for energy, but it's not that efficient.  Instead cells utilized amino acids for building new proteins; including the 'essential' amino acids, those that can't be generated by mammalian cells (we lack the enzymes).  So some amino acids are absolutely critical for our well-being.  \n\nLow carb diets simply don't have much carbs, and force the body to switch to fat to burn (in theory).  In reality it doesn't work too well.  During initial exercise, muscles use glycogen, a stored form of glucose, for energy. Also fat is utilized, and a bit of protein.  After 2 hours of exercise (or so, depending on the person), muscle glycogen is depleted, and body must use fat and glucose and protein.  If you do not intake glucose during this exertion, your performance will rapidly drop off; you can only burn so much fat at a time.  So the best advice for fat burning is exercise (at 60-70% max heart rate) for an hour or two, 3, 4x a week, and keep hydrated with water or gatoraid.  \n\nHigh carb diets make it easier for long term exercise by increasing the amount of muscle glycogen.
555388
My favorite is the cow, more specifically, the fillet Mignon.\n\nI have eaten, rabbit, cow, deer, elk, pig, duck, goose, bear, buffalo, gator, chicken, pheasant, and several fish.\n\nI love eating animals! Provides plenty of protein for my body and brain.
192733
Cows have a two stage digestive system, like many animals that eat grasses. Because they consume so much grass and it is so hard to chew, they first swallow it to a pouch above their stomach.  Bacteria begins to breakdown the grass, much like fruit ferments, in that pouch.  Once it softens enough to chew, and the cow will regurgitate the cud (food) from the pouch to its mouth, chew it and swallow it to their stomach where it is digested much like ours.\n\nWe, birds and fish all have much more efficient digestive systems and so don't need to consume as much.  Also our diet has much more variety and food value.
69491
Biomass is lumps of dead things.\nThe dead things were either plants or animals that ate plants (or animals that ate animals that ate plants).\n\nThe biomass could be burned to release heat and light.\nOr the biomass could be fermented to produce methane which could be burned to release heat and light.\nEither way, energy is available from biomass.\n\nIn the simplest case, say a plant being burned (logs for instance), from where did the plant get all that energy?