Answer:
C
Explanation:
The dissecting microscope is used to examine ONLY solid specimens as it works by using reflected light not transmitted light.
Blood will transmit light not reflect it
Applying ice to a fire victim leads to tissue hypoxia and necrosis because it will change the skin's temperature too fast and may cause frostbite. The burn could have had removed a layer of skin, leaving the fragile tissue exposed which will be more sensitive to the ice.
Answer:
B. A group that is treated the same as other groups except for the variable being tested.
They can BE used as Treatments ,they can be used for Natural Gas, and they can be used in Oil
Hope It helped :D
