The Major function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli, the layers of the cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other, the barrier between air and blood averages about 1 micron in thickness. Oxygen diffuses quickly through the air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
E. produced in both male and female humans
LH and FSH are both gonadotropins, meaning they're secreted by the gonads
LH triggers ovulation in females and helps produce testosterone in males.
FSH helps the germ cells (cells that eventually turn into gametes) of both genders mature
Answer:
Examples of direct costs are direct labor, direct materials, commissions, piece rate wages, and manufacturing supplies. Examples of indirect costs are production supervision salaries, quality control costs, insurance, and depreciation.
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Explanation:
The answer to this question with the options presented in the problem would be A. 50.
It is said by experts that in the energy pyramid, 90% of energy is lost for life processes such as photosynthesis, respiration, and the like. So this means that only 10% will remain for the consumer to have. That would be saying that if suppose there are 500 units of energy available at the producer level of the energy pyramid, to get the units of energy available to the first-level consumer is to have the 10% of 500 which is 50.
