An environmental scientist gives a demonstration on composting. Roger is in the audience. He wonders how composting discarded food waste helps to slow climate change. What question should he ask to get his answer? Select one:

a.
Will composting save money for my family?

b.
Does composting attract unwanted rodents?

c.
Can composting help more trees to grow?

d.
Does composting smell better than rotting trash?

e.
How many pounds of plastics does a typical family recycle in a month?

A

Explanation:

I just did the test

i would like to make dinner for my mom, dad, and sister

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.