Answer:
1 is C
2 is C
3 is C
Explanation:
1) the humming noise is in the background
2) faxes help pharmacies get info from doctors
3) you are weighing weather it is a good idea
Answer:
10 per 1,000.
Explanation:
The death rate and birth rate affects the population dynamics of the particular area. The birth rate increases the population size whereas the death rate decreases the population size.
The death rate of a population can be calculated by the following formula:
Crude death rate = total death/ total population
Here, total death = 1,000 and total population = 100,000.
Crude death rate = 1,000/ 100,000 = 0.01 or 10 per 1,000.
Thus, the correct answer is option (c).
Answer: d. autonomic nervous system
Explanation:
The dilation of the pupil occurs due to the radial muscles. This is controlled by the autonomic nervous system. The autonomic nervous system consists of sympathetic and parasympathetic nervous system. The sympathetic nervous system controls the dilation of pupil whereas the parasympathetic nervous system controls the contraction of pupil.
A dilation response generally involves the widening of the pupil that may be caused by the adrenaline and drugs like cocaine, MDMA, amphetamines, hallucinogens and dissociatives.
Pernicious anemia produces red blood cells that are <u>large</u> and<u> vitamin B12</u> deficiency contributes to pernicious anemia.
Explanation:
When there is a lack of intrinsic factor, secreted in the parietal cells of the gastric mucosa or the stomach lining, vitamin B12 absorption from the stomach is affected.
Vitamin B12 is one of the key factors responsible for normal synthesis and maturation of fully functional red blood cells (RBCs).
The main function of the RBCs is to carry oxygen through hemoglobin to all parts of the body. In order to transport oxygen, the RBCs must be mature with normal shape (concave center and circular shape) and size.
When there is a lack of vitamin B12, the RBCs are not matured and immature, megaloblastic, large, irregularly-shaped red blood cells are formed and circulate in the blood. This also leads to macrocytosis of RBCs.
These cannot function as normal mature blood cells because of the irregular shape and cannot carry hemoglobin to transport oxygen.
