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How old could the average rock be, how young? Are most very old? How old? How long does it take to make an average round rock? How does it happen?NEWQ:show
How old could the average rock be, how young? Are most very old? How old? How long does it take to make an average round rock? How does it happen?
For example, we have a bottle filled with water to the point when there’s no space left in that bottle, is the water still moving as we shake the bottle?NEWQ:show
ELI5: For example, we have a bottle filled with water to the point when there’s no space left in that bottle, is the water still moving as we shake the bottle?
ELI5: Why do you have to wait 30 seconds after unplugging something before plugging it back in?
I know glass and aluminum can be recycled pretty efficiently, but if plastics have lower melting temperatures I would assume they'd denature less therefore offering better methods of recycling.
Why does the spark produced by tesla coil or any electrical discharge shaped like zig zag and not straight?NEWQ:show
ELI5: Why does the spark produced by tesla coil or any electrical discharge shaped like zig zag and not straight?
In light of the recent launches I was wondering why rockets launch straight up instead of taking of like a plane.
It seems to take so much fuel to go straight up, and in my mind I can't see to get my head around why they don't take off like a plane and go up gradually like that.
Edit - Spelling and grammar
Edit 2 - Thank you to everyone who responded. You have answered a life long question.
Why/how does the body know when to wake up after routinely waking at a certain time, even though you don’t always fall asleep at the same time every night?NEWQ:show
When I wake up at the same time every weekday using an alarm, I wake up at that same time on weekends, even though I fall asleep a lot later Friday evenings. I’ve been told there was an inner clock, but how does the body measure time? (Sorry if this is unclear)
If humans did not burn fossil fuels and return some CO2 into the atmosphere, would the Earth reach a point of collapse where plants would not have any carbon to build with?NEWQ:show
So I saw a video a while ago that went into details about how the Earth has been losing carbon in its atmosphere for some time now. As a result plants began to grow slower and smaller to sustain themselves. In recent years as a result of human activity it had been found that crops were growing quicker now due to the elevated levels of CO2 in the Atmosphere giving a greater abundance of building materials. Though, as a result to accelerated growth, vegetables were less nutritious.
My question I guess is around what would happen if humans never burned fossil fuels and returned some of that Carbon into the atmosphere. Would we reach the point where plants would no longer be able to sustain themselves as they do now? Would fossil fuels just renew and trap more and more carbon out of the ecosystem and cause it to collapse at some point?
Edit: Just to specify, but I do not believe that burning fossil fuels and polluting the environment is positive in any way. My question was around the re-introduction of carbon into the atmosphere that has been locked into the crust and whether or not we were incurring a gradual deficit. While a lot of life has adapted to the current climate as it is now and is put at risk from its change, it seemed on the surface to me that re-introducing more carbon is less destroying the earth and more reverting the Earth to an earlier state, making it unstable during the transition.
All in all, my main question has been answered and thank you for clarifying the Carbon cycle and the earths natural ability to maintain its ecosystem.
If you have internal bleeding how does the blood that has leaked into areas outside of your veins get flushed out of your body?NEWQ:show
If it can’t get back into veins or into your digestive system how does it get out of the open spaces between your organs?