<span>This would be an estimated average requirement, or EAR. This amount is considered what would be "average" for the predominant body type and person regarding the intake of a nutrient. This may be more or less than what will be later calculated as the recommended daily allowance for that nutrient.</span>
Answer:
1A - Respiratory = trachea, lungs... however both arteries and veins move oxygen around the body, and are therefore valid answers
1B - Skeletal = bones
1C - Muscular = muscles
1D - Digestive = stomach, large/small intestine
1E - Circulatory = heart, veins and arteries
2. Cellular respiration is the conversion of sugar into energy the cell uses to function via various chemical reactions. Digestion is an example of this. Stomach acid breaks down food into sugars that cells break down further into energy to keep you alive
3. Bones contain bone marrow deep inside of them which is responsible for the creation of red blood cells. Your lungs can move air all they want but would be useless without red blood cells to take the oxygen to cells and take the CO2 away from them.
Answer:
ughh thanks........because I already give up!!!!!!!
Explanation:
Homeostasis is the "steady state" and is necessary for life