Some plant species release chemicals into the soil that end up killing nearby plants. this is an example of what? competition, cooperation, mutualism, working together

The answer is Competition.

Explanation:

Competition is a biological interaction between living beings in which the biological adequacy of one is reduced as a result of the presence of the other, this may be because there is a limitation of the amount of at least one resource used by both organisms or species; such as food, water, territory, couples.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.