Carbon monoxide has a density that is about 97% that of air under normal room temperature. So, to answer the question, no, it is lighter than air. You would think, then, that it would rise. In real-world conditions, there are a lot of forces that cause the CO to mix rather completely into the air.
Growth Hormones. Growth Hormones are responsible for the development function of the entire body. Growth Hormones are peptide hormones which encourages growth and cell regeneration in both humans and animals.
During this phase, the pituitary gland, located at the base of the brain, releases two hormones, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which stimulate the ovary and cause follicular growth. The developing follicle secretes the hormone estrogen, which has several important roles in the body.