Practice Exercise Estimate the uncertainty in the speed of an oxygen molecule if its
position is known to be +3 nm. The mass of an oxygen molecule is 5.31 x 10-26
kg.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms