A scientist is investigating the effects of electromagnetic radiation on plant growth. She wants to test the plants with two different types of electromagnetic waves: one with a very long wavelength and one with a very short wavelength. Ideally, the waves will have the greatest possible difference in wavelength. Which two types of waves should she choose?
A.
visible light waves and radio waves
B.
infrared rays and ultraviolet waves
C.
radio waves and gamma rays
D.
microwaves and X rays
Answers: 2
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