Animals use and produce the same gases day or night. Oxygen utilized and CO2 produced.
The gas given off by plants that is needed by animals is oxygen. Through the process of photosynthesis, plants convert carbon dioxide into oxygen, which animals then breathe in to support their respiration. This exchange of gases between plants and animals is vital for the survival of both organisms.
All plants, animals, fish etc, need gas from the air to breathe. Whether it be carbon dioxide, oxygen from water or our atmosphere, its pretty much a given.
The gas in the atmosphere important to respiration is oxygen. It is taken in by animals during breathing and used in cellular respiration to produce energy for their cells.
Oxygen
Methane is given off by animals as a waste gas.
oxygen
In the atmosphere, carbon is attached to the oxygen gas molecules and with the help of the sun and photosynthesis; the C02 gas is pulled from the air to make plant food from carbon molecules. Through food chains, the carbon in the plants moves into the animals that consume the plants, and animals eat other animals are getting the carbon from their food. In basic terms: carbon moves from plants to animals, and into the ground and reenter the atmosphere. The 02 gas is produced in the plants which release it into the air and consumers inhale it in; and/or the 02 gas in the atmosphere goes into the ground.
In the atmosphere, carbon is attached to the oxygen gas molecules and with the help of the sun and photosynthesis; the C02 gas is pulled from the air to make plant food from carbon molecules. Through food chains, the carbon in the plants moves into the animals that consume the plants, and animals eat other animals are getting the carbon from their food. In basic terms: carbon moves from plants to animals, and into the ground and reenter the atmosphere. The 02 gas is produced in the plants which release it into the air and consumers inhale it in; and/or the 02 gas in the atmosphere goes into the ground.
Animals produce carbon dioxide gas through respiration. This process involves taking in oxygen and releasing carbon dioxide as a byproduct, therefore putting carbon back into the atmosphere.
There are two gases: hydrogen and oxygen.
They are called gas giants, actually. They are called that, because they have a very thick atmosphere and the core is so deep below the 'surface' of the atmosphere that we cannot see the core.