Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of . Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of . chondrocytes and osteocytes marrow and osteons cartilage and compact bone osteoblasts and osteoclasts

answer; polycythemia is the correct answer;

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

i would say it is

you can have just about every answer you can think of