Eutrophication will happen. Aerobic bacteria in the water will decompose the fertilizer and release a tonne of minerals that algae found in the water will then use.
The bacteria will have used up a lot of oxygen and the algae, while respiring will also use up a lot.
The heated air temperature from inside the balloon more likely rises since it can't escape its trapped resulting in different density from the cooler air, the cooler air from the outside is a bit denser than the heated.
The friction force
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A form of
electricity which can attract things is static electricity. Static electricity
is the result of an imbalance between negative and positive charges in an
object. These charges built up o the surface of an object until they find a way
to e released or discharged causing the attraction of things.
