what would happend if every plant was to die all over the world?
147866
Then humans would follow in death.
349089
the whole earth is going to be flooded
992273
Old age, the Earth will gradually become uninhabitable over a very long period of time until the time comes when the few million people that are left only have legends about how the planet once supported billions.\nNuclear war,  pandemics, possible global warming would be as hiccups along the way.
245551
all living beings would die.  Too much to hydrate not enough water.
834984
Continents will grow and hell will freeze over!~ polar caps will dominate the poles causing the earth to wobble throwing precession off wack pure kaos!!!! terrorism will end though!
364195
None of us would have to worry about what we going to do the next day because we would all be dead.\n\nWhat would happen if the Earth stopped spinning?\nThe probability for such an event is practically zero in the next few billion years. If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. All of the land masses would be scoured clean of anything not attached to bedrock. This means rocks, topsoil, trees, buildings, your pet dog, and so on, would be swept away into the atmosphere. \n\nIf the process happened gradually over billions of years, the situation would be very different, and it is this possibility which is the most likely as the constant torquing of the Sun and Moon upon the Earth finally reaches it's conclusion. If the rotation period slowed to 1 rotation every 365 days a condition called 'sun synchronous', every spot in the Earth would have permanent daytime or nighttime all year long. This is similar to the situation on the Moon where for 2 weeks the front-side is illuminated by the Sun, and for 2 weeks the back side is illuminated. This situation for the Earth is not the condition of 'stopped' rotation, but it is as close as the laws of physics will let the Earth get. \n\n \n\nIf it stopped spinning completely...not even once every 365 days, you would get 1/2 year daylight and 1/2 year nightime. During daytime for 6 months, the surface temperature would depend on your latitude, being far hotter that it is now at the equator than at the poles where the light rays are more slanted and heating efficiency is lower. This long-term temperature gradient would alter the atmospheric wind circulation pattern so that the air would move from the equator to the poles rather than in wind systems parallel to the equator like they are now. The yearly change in the Sun's position in the sky would now be just its seasonal motion up and down the sky towards the south due to the orbit of the Earth and its axial tilt. As you moved along constant lines of Earth latitude, you would see the elevation of the Sun increase or decrease in the sky just as we now see the elevation of the Sun change from a single point on the Earth due to the Earth's daily rotation. \n\nFor example, if you were at a latitude of +24 degrees North in the Summer and at a longitude where the Sun was exactly overhead, it would slide gradually to the horizon as Fall approached, but since the Sun has moved 90 degrees in its orbit, it would now be due west. Then as we approach Winter, you would now be located on the dark side of the Earth, and would have to travel in longitude to a location 180 degrees around the Earth to see the Sun 1/2 way up the sky because in the Winter, the Sun is 48 degrees south of its summer location in the sky. It's a little confusing, but if you use a globe of the Earth and orient it the right way, you can see how all this works out. \n\nAs for other effects, presumably the magnetic field of the Earth is generated by a dynamo effect that involves its rotation. If the Earth stopped rotating, it's magnetic field would no longer be regenerated and it would decay away to some low, residual value due to the very small component which is 'fossilized' in its iron-rich rocks. There would be no more 'northern lights' and the Van Allen radiation belts would probably vanish, as would our protection from cosmic rays and other high-energy particles. This is a significant biohazard.
907177
I dont agree with the first two answers, just because the plants dont get pollinated it doesnt mean they will die, they just will not be able to reproduce. \nIf all animals die, there will be a major disruption in 2 main cycles that could affect the ecology. The Nitrogen cycle, and the CO2 cycle. \n\nPlants use Carbondioxide for photosynthesis and give off oxygen.. where animals use oxygen and give off carbondioxide. any instability in this cycle would have detrimental effects.\n\nNitrogen cycle.. ammonia based compounds in the soil mostly from animal waste are converted into nitrites and nitrates by specific bacteria  so that they are absorbed by the plants...without animals, there would be a major imbalance.
313191
If this happened I think the world would end because the vibrations would cause all volcano's to erupt, plates to shift causing massive earthquakes.  Then, all the volcanic dust would block out the sun causing the earth to freeze and sending us into another ice age. In desperation idiots in third world countries would launch nuclear weapons trying to heat things up but, this would kill all forms of life except of course cockroaches!
823519
If there was no greenery or trees, no plants or any of the other things you mention there would be no life. So mankind would not exist.
1076079
The sun will grow until it engulfs the Earth before it burns out.  And long before that, the temperature will get way too hot and evaporate all the water, and the planet will no longer be able to support life.
482213
The world's weed supply would collapse, bad idea.
538008
all of them, we'll all be screwed because it's going to throw off the whole balance of the planet and we're all going to die
1064119
If the sun were any farther from the earth we would all freeze to death. If it were any closer, we would all burn to death.
462394
It would suck.  Everyone would be stressed and on edge and there would probably be more health problems than there are today.
727739
first of all we'd need a little over 8 minutes to notice it had disappeared, after it had disappeared.\n\nthen it would be night time for all\n\ntemperatures would start falling. And instead of rising again with the next sunrise, they would continue falling.  Pretty soon even hot regions would reach negative temperatures.  Which would take its toll on plants, animals, and human beings (just imagine huge shantytowns w/o any heating, millions of human beings).\n\nin the richer world, and where we have seasons, we'd turn on the heating and make do.  It would not be fun living in the dark all the time, but people North of the North Pole do it in the winter, and they survive.  And Canadians, Fins, are organised to take very cold temperatures for extented periods of time.\n\nStill, many major cities would quickly suffer huge numbers of deaths (for how long can you overheat enough buildings in, say, Paris, until you run out of fuel, or the temperature difference with the ouside is such that your buildings are not well insulated enough?)\n\nWith panick, despair, and permanent night, we'd obviously soon seen riots, looting, all those things.\n\nPretty soon most plant life would die off.  And as a result most animal life would die off also.\n\nGovernments would probably then work on plans to shelter a number of people underground (see Armageddon for examples of how to try to do it).\n\nOnce you'd have people in shelters, you could dig down further hoping to get some heat from the Earth's core.\n\nBut.\n\nBut after a while, with plant life having largely disappeared altogether, we'd face huge food shortages, starting from a few months after the disaster.\n\nEven rats, or insects, need to be fed something...\n\nSo I'm not sure that much of Mankind would be left alive after at best a couple years.  Of course you could pick a rather limited number of "Survivors", and park them in some large, comfortable shelter, with a lot of canned food, and they could last for some years.\n\nMaybe we'd find some plants that really don't need any light and we could grow them for food?\n\nIt would be tough, for sure.  Remember, in the short-lived (couple months) "nuclear winters" caused by all the dust being blown up in the atmosphere by meteorite impacts, on each of the 5 mass extinctions life on Earth has seen, anywhere between 75%, and 90%, of the species disappeared...
1089869
All carbon based life would immediately cease. Since "no water at all" means our bodies as well, including our cellular structure, we would all just be dessicated husks.
440300
If everyone were gay the world would end.