It's only poisonous when a single oxygen atom is bonded with a single carbon atom. This makes carbon monoxide, and is poisonous to the body, because the body can't use it. We take in the natural occurring form of oxygen as 02, meaning that there are two oxygen atoms bonded together. We use this form of oxygen to carry out our life processes. When the person is exposed to carbon monoxide and oxgygen (O2), the body chooses carbon monoxide unaware that the body is unable to use it. So in conclusion, carbon monoxide is poisonous, but oxygen in the form of O2, is what we need to survive, so it's not poisonous.
The animals need the oxygen that plants release.
animals usually depend on plants for oxygen. we breath out carbon dioxide and breath oxygen in, same with animals. and plants breath that carbon dioxide in and and breath out oxygen.
Plants supply food and oxygen for animals and humans.
For starters, algae are plants. Plants never use oxygen. Animals use oxygen in the process of respiration. Decomposers use oxygen in the process of respiration when decomposing plants and animals including algae.
animals need oxygen and plants produce oxygen. if there is no light for photosynthesis, then plants can not produce oxygen and animals cannot survive
Animals breathe in oxygen and let out carbon dioxide. Plants take in carbon dioxide and release oxygen.
plants give animals oxygen and food.
plants and animals plants=oxygen animals=carbon dioxide
plants so the animals can have oxygen
Oxygen
Humans and animals use oxygen to breathe. Plants exhale oxygen.
energy