How do cows exchange gas and acquire energy?

Answer 1

Cattle release two main types of gases: methane (CH4) from belching and flatulance, and carbon dioxide (CO2) from exhaling air from their lungs as well as from the rumen. They will also release water in the form of gas when they exhale and from the sweat on their noses and mouths. They intake oxygen and nitrogen into their lungs when they inhale. All of these gases are a natural part of the Earth's systems.

Oxygen is attained from the air which is a "waste" gas released by plants. Carbon and nitrogen is also sequestered by plants. Nitrogen-fixing bacteria and nitrogen-fixing plants including legumes like alfalfa take nitrogen from the atmosphere and put it into the soil for plants to utilize. Nitrogen is also attained from the feces and urine that is "released" by cattle onto the ground. Plants remove carbon from the atmosphere by "breathing" it in through the process of photosynthesis. The carbon, once utilized by the plants, is returned to the soil through the plant's root system, and stays there until the plants and soil is disturbed.

Thus, cows exchange gas by naturally interacting with the natural water, nitrogen and carbon cycles, particularly when they are on pasture or rangeland.

They acquire energy by contributing to the natural plant-animal cycle by eating plants (primarily grass and legumes) and relying on their rumen and the microflora in their rumen to digest and utilize the nutrients provided by the plants they eat.

Answer 2

Mammals take in Oxygen when they breath inhale air through there mouth and nose, which then goes goes down the trachea and into the lungs. Then when they exhale they release CO2.

Answer 3

They exhale carbon dioxide. All creatures do.