Answer:
La sangre es un fluido corporal especializado. Tiene cuatro componentes principales: plasma, glóbulos rojos, glóbulos blancos y plaquetas. La sangre tiene muchas funciones diferentes, que incluyen: transportar oxígeno y nutrientes a los pulmones y los tejidos.
Explanation:
Answer:
placenta
Explanation:
Nutrients and waste products are exchanged between the mother and her baby through the placenta and umbilical cord without any mixing of their blood.
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The study of British civil servants that compared mortality rates across four employment grades over a ten-year period is the Whitehall study.
<h3>
What is the Whitehall study? </h3>
It was the study to determine the social factors that affected the health of British civil servants. It included the study of prevalence or occurrence of diseases like cardiovascular diseases. It also included studies of the mortality rate.
This was done in two parts
- Whitehall study I - It was conducted from 1967 to 1977. It examined 17500 civil servants (only male)
- Whitehall Study II - It was conducted from 1985 to 1988. It examined 10,308 civil servants. One-third of them were women.
Therefore, the study of British civil servants that compared mortality rates across four employment grades over a ten-year period is the Whitehall study.
Read more about the Whitehall study, here
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It is A. sleeping deeply.
Delta waves, like other brain waves, are recorded with an electroencephalogram (EEG) and are usually associated with the deep stage 3 of NREM sleep, also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep.
