Novocaine is a logal anesthetic agent which is commonly used during dental procedures or other oral processes. This causes numbness of the infected area so that the patients will not feel the pain. This is a local name for procaine which was discovered by the German chemist named Alfred Einhorn in 1905.
The duration to which we expect the numbness varies to the different factors. The factors include the location of the application, the area, concentration, and presence of other anesthetic chemical. It is expected at least that novocaine will last for 1.5 to 3 hours.
I say it would be B. because it is the safest for you. You should never reach across a flame because of the risk of catching on fire. And never leave a flame unattended. Heating a liquid in a closed container could be dangerous as well because it heats fast and could go wrong. I hope this helps!
Answer: Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
Explanation:
The process where a specie develops and evolves into new many species is termed as speciation. Macroevolution explores the mechanism of speciation where organisms across biological populations evolve as distinct population.
There are many causes to speciation, a) geographic isolation, b) gene flow reduction, and c) reproductive isolation.
Medulla oblongata is the part of the brainstem that controls the autonomic functions such as sneezing, coughing, digestion and etc.
