Noisy animals such as frogs, howler monkeys, parrots, dogs, ect. You get the point
your larynx or (voicebox)
whale, dolphin
A firefly is an example of an object that produces its own light. The sun is another.
CO2 is the product of many things, but here are a few: Humans and animals exhale CO2 Decaying organic material (in land fills, for example) produces CO2 Burning organic material (forest fires, for example) produces CO2
it is the voice box. it produces sounds.
carillon
It is likely that a large, well made pipe organ produces the lowest sounds, at least among the acoustic instruments. Electronically you can produces sounds of arbitrarily low pitch.
In a factory, automation is when automatic equipment produces things. An example would be the label that is placed on each crayon via a machine.
There are many things that could produced the ocean floor. Dying organisms for example are one component in the ocean floor.
No actually the bass drum produces low-pitched sounds.
The instruments that creates sounds from a string tremor stretched out in both ends is called Chordophones. The popular example of this category is guitar.
This sounds like a wish-fulfillment dream. Your subconscious mind, which produces dreams, creates a happy story that allows you to experience something you want.