cyanobacteria
cyanobacteria
cyanobacteria
The oxygen in Earth's atmosphere was originally produced as a byproduct of photosynthesis by cyanobacteria around 2.5 billion years ago.
Carbon di Oxide is the metabolic waste excreted out from our body through mouth.
Carbon bi oxide.
oxygen
The main substance excreted in urine is urea, which is a waste product resulting from the breakdown of proteins in the body. Other components excreted in urine include water, electrolytes, and other metabolic waste products.
The most common metabolic mammalian waste product is urea. It is a colorless crystalline compound that contains nitrogen, and is excreted in urine.
It is carbon dioxide, a metabolic waste. But remember, most of it is retain in the body to adjust the pH.
Metabolic waste is made up of substances that the body cannot use for energy. It consists of urine and feces that are excreted, and carbon dioxide, which is exhaled through the nose and mouth.
oxygen
oxygen