why do all animals in a community depend on producers?
154960
Producers of what but animals depend on others because they cant do much on their own
952235
No it would just stop producing milk like any other species. Cows only produce milk constantly because we milk them. So long as that happens the cow or any other animal will continue to produce milk.
1169149
Carbon dioxide is used by the plant to produce glucose in the dark reactions of photosynthesis.  Without carbon dioxide the plants would be rather usless in the food chain.\n\n\nAll answers are correct.  Producers are the source of food for the next trophic level up.  Energy transfer is about 10% from level to level, with the rest going off as heat.  It would be bad news if there were more organisms above the others in the pyramid.  this would help lead to total extinction of life as we know it.
1150787
Nope.  If there was no demand for beef or chicken, people would quit raising them and there would be very few of them around anymore.  You surely don't think they run around in huge wild herds, do you?
894008
Yes, the ambience is quite congenial for animal living. The rare species among them are being propagated within the ecological limitations.
370350
This is so they ensure the survival of the plant species by reproducing them self's.  The seeds attract birds and animals to eat them and they in turn help spread the seed.  This is more efficient than pure wind distribution.
415292
Because if too many people farmed, then farmers could not earn enough money, and they would all quit. As for starving people in other countries, I know it is sad, but farmers will only harvest what they can sell for a satisfatory profit. Unless someone is paying them for the crops, they will not grow it. Its one sad part of the world we live in.
764895
Cows, like all mammals,produce milk to feed their young.  We take advantage of this when we milk a cow.   The milk supply produced depends on the demand for it.   If a calf- or the farmer, take less milk, then less is produced to replace it.  After a while, the cow's body quits producing milk all together, and she "dries up" in farmer language.  Now if you have a cow in milk production, you milk her twice a day, every day, 7 days a week.  At each milking, you try to remove all the milk from the udder.  If you do not milk her, she will get extremely uncomfortable, full and irritable.  Some will leak out, and eventually her body would absorb the excess.  In the meantime, she would be at risk to develop infections and abcesses of the udder, and could even die from them.  If she does develop an abcess, milk production in that quadrant (cows have four separate sections in the udder, and four teats, fyi) will stop.   It may also not produce milk in that quadrant ever again, and will always be at risk for developing another abcess if she does.  A good farmer would never let this happen.  He would gradually reduce the amount of milk taken from a cow over a period of weeks until there was very little produced.  A cow naturally dries up milk supply before another calf is born, at which point she "freshens" and begins supplying milk again.
148091
The usual example is that of a pond; a self-contained ecosystem.\nNow you need to do your learning and consider how the organisms depend upon one another.
1005473
Presumably for the same reason it's important in any other place: Agriculture has a dual role in both personal sustenance as well as the industry of food growth/production.
676046
The interaction between an organism and its enviroment is dynamic. It is impossible to separate the "nature" from the "nurture" because they are intertwined. Unfortunately, many people including scientists are too caught up in this false dichotomy.
745723
Good explanation by 'Cybele' from another perspective.\n\nThe pastoralist need the land for grazing.\nThe farmers need the land for growing crops.\n\nIt has been proved time and again that if a piece of land is used for growing crops it will support more humans than if it's used for rearing cattle for the meat.
175562
Interdependence? Mutually Dependent. Most of the natural world is mutually dependent on its environment in order to sustain the eco-system. An example is the honey bee which is dependent upon flowers for nectar to create honey (the bee eats honey), in turn the flowers are dependent upon the honey bee for reproduction. The honey bee cross-pollinates flowers by simply spreading the pollen that gets on itself from one flower to another, thereby creating more flowers.
285327
Your argument has some assumptions, assertions, and logic that are not sound.\n\nFirst of all, you only multiply probabilities together when they are independent variables - it would be easy to argue that many of the items that you mentioned are interdependent.\n\nAlso, I think you misunderstand what evolution of species is proposing.  Evolution does NOT depend on luck - it is instead an observation that lucky organisms survive and pass on their properties to their descendants.\n\nConsider bacteria - almost all mutations are harmful but a few bacteria have lucky mutations that make them immune to penicillin.  If penicillin is used on bacteria, only these lucky ones survive - and most of their descendants inherit the the same immunity-mutation.  \n\nThe original mutation is luck - the environment then selects and a small set of traits due to beneficial mutations persists.  And THAT is not luck, that is selection.  That's why the process is called "Natural Selection".  \n\nSadly, this is why almost all bacteria were zapped by the early antibiotics, and now (only 60 years later) we have hundreds of resistant strains.
1026025
I'm not certain anyone but a biologist can answer this one correctly, but I'll take a stab: the organisms in any ecosystem are related to each other in a hierarchy, like a food chain. Other relationships are helping, symbiotic or parasitical relationships in which one organism's function allows another to live. An ecosystem thrives when all its organisms are in balance.
1175721
consumers are referred to the heterotrophs (who depend on producers and decomposers for their food).
62231
Actually, as stated in the Niche Theory, living space is also a resource. If they do not share the same living space, they're not sharing all the resources, thus, there would be no competition among them.