What is meant by the term octane rating? A) the degree of ...

[Bernana]

What is meant by the term octane rating?
 
  A) the degree of branching in the carbon framework
  B) the degree at which the compound ignites
  C) the percentage of octane in the mixture
  D) a measure of how many degrees it takes to ignite a mixture of octane
  E) none of the above

Question 2

Why are polar oceans most fertile in the autumn?
 
  A) The warm summer temperatures allowed for the growth of many microorganisms in the water.
  B) As the oxygen rich surface waters cool in the autumn, they sink to the bottom, displacing the layer of decomposing organic matter, forcing it to rise, adding nutrients to the surface of the polar oceans.
  C) The salinity of the ocean is at a low point at that time of year.
  D) Ocean currents tend to reverse during the autumn, bringing nutrient rich waters up from the equatorial regions.

[kjo;oj]

Answer to Question 1

A

Answer to Question 2

B

[Bernana]

Both answers were spot on, thank you once again

[kjo;oj]

Great! Please up vote