When exposure to a substance is below the threshold level, we ...

[mmm]

When exposure to a substance is below the threshold level, we expect to see
 
  A) no ill effects.
  B) acute but no chronic effects.
  C) chronic but no acute effects.
  D) short-term but no long-term effects.

Question 2

Sea level rise is caused not only by the melting of polar and glacial ice but also by
 
  A) greatly increased rainfall over oceans.
  B) freshwater being forced from groundwater into rivers and then to the oceans.
  C) the fact that water expands in volume as it warms.
  D) the effects of hurricanes and typhoons.

[abro1885]

Answer to Question 1

A

Answer to Question 2

C

[mmm]

Gracias!

[tranoy]

Excellent