Answer:
I'm pretty sure the answer is "environment"
in 1913 Niels Bohr proposed that electrons move in orbits around the nucleus such as the planets orbit around the sun
Answer:
they need to be able to maintain their salt content, thru osmoregulation
<span> A solid, steady energy level is very important for the brain. The brain uses almost one-third of our calories. Any fluctuations or low levels of energy will have enormous impacts on our nervous system and emotions as well. </span>
<span> This has been demonstrated and is well-known in the case of hypoglycemia. In this condition, the brain does not receive a steady supply of glucose. Common symptoms can mimic many emotional and physical disorders. These include fatigue, depression, anxiety, confusion and even violence and psychosis.</span>
<span> Emotionally speaking, when one is tired, decision-making and all other mental and emotional factors are more difficult. Thousands of people today suffer from low energy levels. This often results in feelings of depression, anxiety, mood swings, irritability, withdrawal and more.</span>
<span>Answer:
Respiration is a very important process that happens in all living things. It is the way in which our bodies release energy from the food we eat.
When your hand is above your head, the flow of blood is reduced. This means the
supply of glucose and oxygen to the cells is limited, they respire less, and release less
energy. Therefore, the cells get tired more quickly and ache more readily. Pupils may
also account for their results by discussing anaerobic respiration.</span>