Visible light, X-rays, radio waves, and microwaves are known as: ...

[nenivikky]

Visible light, X-rays, radio waves, and microwaves are known as:
 a. electromagnetic radiation.
  b. particle radiation.
  c. cosmic rays.
  d. radioisotopes.

Question 2

Which statement best describes organophosphates?
 a. chemical substances derived from petroleum or natural gas
  b. chemicals used as coolants, aerosol propellants, and solvents
  c. radioactive materials used in medical diagnosis and treatment
  d. a class of dangerous chemical compounds used as pesticides

[patma1981]

Answer to Question 1

A

Answer to Question 2

D

[nenivikky]

Excellent

[samiel-sayed]

Gracias!