Oxygen is actually breathed in by animals. It is carbon dioxide which is exhaled by animals. Plants take in carbon dioxide and give off oxygen.
Generally, no.
it is called cycle because when we exhale we gives off carbon dioxide, and it is absorb by plants, then after the process called photosynthesis it gives off oxygen to the atmosphere, then now we inhale it and after we inhale we exhale the carbon dioxide and goes to the atmosphere then absorb by plants, gives off oxygen, goes to the atmosphere, then inhale it and so on and so forth . . . . . . . . . . . . . . . for shorth will go back and go back. not like the one way flow of energy that will remain.... . . . . . . . . . . . . . . . . . . . . . . .
Smoke alarms may go off simultaneously if there is a widespread presence of smoke or fire in the area where the alarms are installed. This can trigger all the alarms to sound at once to alert people of the potential danger and prompt them to evacuate the premises.
yes, because we live off the carbon dioxide the plants give off.
The gas that is taken in by animals is oxygen. Animals absorb oxygen and exhale carbon dioxide. Plants take in carbon dioxide and let out oxygen.
Photoelectric smoke alarms are also called optical alarms. They are more expensive than regular alarms. They are also more accurate and less likely to go off unnecessarily.
Into the atmosphere as carbon dioxide.
Limewater - if you bubble Carbon Dioxide through limewater it will go cloudy!
In a fume cupboard!
Smoke alarms may go off simultaneously due to a common trigger, such as smoke or fire in the vicinity. This can activate interconnected alarms in a building to alert occupants of potential danger.
Methane burns in oxygen and gets oxidised. Carbon is oxidised to carbon dioxide, hydrogen to water.