This situation is best explained by the process of natural selection.
Rickets is caused as a result of vitamin D deficiency. The role of vitamin D in the body is its significance in the absorption of phosphorus and calcium from the gut. Consequently, phosphorus and calcium in the blood is absorbed in the extracellular matrix of bone hence giving them strength. Therefore, deficiency of vitamin D results to soft bones that are a symptom of rickets.
I’m not sure but I think is B
Answer:
anaerobic organisms do not require the presence of oxygen to produce energy in form of ATP, while aerobic organisms require oxygen
Explanation:
Anaerobic organisms produce energy by glycolysis, which is a metabolic pathway that produces ATP by transforming glucose to lactate when oxygen (O2) is limited. Glycolysis produces two (2) molecules of ATP per glucose molecule. Moreover, when O2 is available, aerobic organisms produce ATP by cellular respiration, which includes glycolysis, the Krebs cycle, and oxidative phosphorylation. Cellular respiration is able to produce thirty-eight (38) molecules of ATP per glucose molecule, thereby being more efficient than glycolysis.
