Bed load is moved by A) suspension only. B) traction only. ...

[evelyn o bentley]

Bed load is moved by
 
  A) suspension only.
  B) traction only.
  C) saltation. only.
  D) saltation, traction, and suspension
  E) both saltation and traction, but not suspension.

Question 2

What is radiative forcing? List gases and aerosols that have positive or negative radiative forcing. What is the primary source of each?
 
  What will be an ideal response?

[tjayeee]

Answer to Question 1

E

Answer to Question 2

Radiative forcing (climate forcing) describes the amount by which some perturbation causes the Earth's energy balance to deviate from zero. Examples include:
Positive radiative forcing: CO2, CH4, and tropospheric O3, all of which have anthropogenic sources.
Negative radiative forcing: stratospheric O3, and aerosols, both of which may be natural.