2, 4-7 Although deep intramuscular injection into a large muscle is the preferred parenteral route of administration, promethazineâs product labeling states that it may be given by slow IV push, which is the typical method of administration in most hospitals.
Quick Answer. Plants produce oxygen as a byproduct of photosynthesis, the process that plants and other organisms use to create usable energy. Photosynthesis consists of carbon dioxide and water reacting in the presence of energy from sunlight, which produces glucose and oxygen.
The movement of oxygen and carbon dioxide in and out of leaves during photosynthesis occurs by diffusion. The higher concentration of carbon dioxide in the air diffuses into the leaf for photosynthesis.Oxygen produced during photosynthesis builds up to higher concentrations and diffuses out of the leaf into the air which has a lower concentration of oxygen. Page: 1  1. 2  2.he higher concentration of carbon dioxide in the air diffuses into the leaf for photosynthesis. Oxygen produced during photosynthesis builds up to higher concentrations and diffuses out of the leaf into the air which has a lower concentration of oxygen. Page: 1  1. 2  2.