Ultra Violet rays or UV's cause the skin to burn in the sun.
<span> The process of creating amino acids does not use protein</span>
Answer: In order to compensate for the low partial pressure of oxygen at altitude, the human body undergoes a number of physiological changes. A vital component in this process is the increase in the concentration of circulating haemoglobin. The role of HIF‐1α, erythropoietin and red blood cells in this acclimatisation process is described, together with the fall in plasma volume that increases the concentration of haemoglobin in the early stages of hypoxic exposure.
Explanation:
<span>combine sentences 2, 3, and 4 to create a series</span>
false it is when someone your age pressures you to do something you dont want to do
