Historically, the protozoa were regarded as "one-celled animals", because they often possess animal-like behaviors, such as motility and predation, and lack a cell wall, as found in plants and many algae.
During the process of cellular respiration, carbon dioxide is given off as a waste product. This carbon dioxide can be used by photosynthesizing cells to form glucose/sugars
Explanation: it is always a good idea to have professional individual instruct you on emergency injections because you may not know the person medical history or how to correctly inject them.
