I would say D it seem to be the likely choice but not a 100%
During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.
Answer: Describe the monosaccharides. Monosaccharides are the monomers of carbohydrates and are often referred to as “the simple sugars”.
Explanation: You can often recognize a carbohydrate by its suffix – ose (e.g. glucose, sucrose, cellulose, etc.)
Ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA and similarities of embryos.
