He was born on July 20, 1822 in Hyncice, Czech Republic
The correct answer is "<span>the blood vessels of the dermis have undergone vasodilation, bringing a greater volume of blood to the skin"
This is because heat signals the temperature regulating center of the hypothalamus then the hypothalamus will respond to that signal by activating the sympathetic nervous system causing the vasodilation of the cutaneous blood vessels leading to more blood flow essentially cooling the skin by letting more heat to the outside environment.</span>
Answer:
The correct answer is: The low power objective.
Explanation:
The low power objective can cover a large field of sight which is ver useful for analyzing several specimens or to inspect smaller ones.
This power also helps the microscope to get aligned and has a reach for the low objective of 10X.
After the 1st half-life 250 g of the radioactive material will be left.
<span>After the 2nd half-life 125 g of the radioactive material will be left. </span>
<span>After the 3rd half-life 62.5 g of the radioactive material will be left. </span>
<span>Therefore after 60 minutes, 3 half lives would have occurred. </span>
<span>Therefore the half-life = 60 / 3 = 20 minutes when 250 grams of the original material would have remained radioactive. </span>
<span>Therefore the answer is A) About 250 gram of the material decayed in 20 minutes.</span>