N LINKS PLS I AM TIRED OF THEM Anna-Sophia found that a person's health is changed through epigenetic changes to DNA, an
epigenetic change will alter your DNA. Remember that A pairs with T and G with C. So if your
DNA changes it could change your whole gene expression. What is the downside to this
happening?

conduction, convection, radiation

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.

there are no contact forces mentioned on the list of choices that you've provided.

answerscientific theory;