The air you breathe comprises three main gases. The largest proportion (79%) comprises the inert gas nitrogen, with oxygen making up 21 percent and carbon dioxide just 0.03 percent
Besides these Energy is produced.
Photosynthesis needs sunlight & carbon dioxide besides water
Humans breathe in whatever happens to be in the air when they breathe in. If there is carbon dioxide then they will breathe it in as well as nitrogen and oxygen. However they only use the oxygen for respiration so they breathe out everything else with extra carbon dioxide.
Oxygen in, Carbon Dioxide out.Another answerBreathing breathes in the atmosphere: not the whole atmosphere obviously, but its composition. Breathing in occurs because of the necessity of oxygen-entrance and breathing out occurs because of the necessity of carbon dioxide-exit.The air consists of 79% nitrogen and 21% oxygen and 0.04% carbon dioxide and equally tiny percentages of other gases. We breathe in this 79% nitrogen and breathe out an equal percentage. We breathe in 21% oxygen and breathe out 16% oxygen. We breathe in 0.04% carbon dioxide and breathe out 4-5% carbon dioxide.
Carbon dioxide Is another thing plants need for Photosynthesis!:)
Lungs!
Normal air is 79% nitrogen, 20% oxygen, and 1% of mixed other gasses such as carbon dioxide, argon, water vapor, and everything else. Your body uses oxygen and excretes carbon dioxide. The nitrogen and noble gasses aren't used by our bodies. When you breathe in, your lungs will exchange some of the oxygen in the air for carbon dioxide. When you breathe out, your exhaled breath contains 79% nitrogen, 16% oxygen, 3% carbon dioxide and about 1% water vapor, along with the other assorted gasses that are present in the atmosphere. Note that normal air contains about 20% oxygen, and your exhaled breath still contains about 16% oxygen. That's why mouth-to-mouth artificial respiration (sometimes called "rescue breathing") can keep people alive even though you've already breathed that air once.
no because its online somewhere else
Volvox breathe through diffusion, where gases like oxygen move in and carbon dioxide moves out through the surface of their cells. Volvox is a type of green algae that forms a spherical colony composed of thousands of individual cells. It is unique in that it exhibits both individual and collective behaviors, with specialized cells for reproduction and movement within the colony.
no because its online somewhere else
Get more oxygen and remove the carbon dioxide or else you will eventually get brain asphyxia. This is what almost happened to Apollo 13.
carbon dioxide will extinguish a flaming splint, hydrogen will burn rapidly