Which of the following can upset the balance of an ecosystem?
too much water
not enough water
too much light
not enough light
all of the above
none of the above

Correct E). All of the above

An ecosystem is said to be balanced  when all the all the plants, animals and the non-living components of the environment are in harmony. It may get disturbed or loos its harmony when there is a increased pollution, an increase in the number of the human population etc.

Ecological balance occurs when nature or man caused the disturbance to the natural balance of the ecosystem. Ecological balance is very important in order to ensure that no particular organism or species is overused or exploited.

answer: all : )

explanation:

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.