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.

not sure if this what   you'r looking for would be percent composition

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.