L 6.2.5 Quiz: Electromagnetic Waves Question 3 of 5
Which two types of waves require matter in order to travel?
I A. Electromagnetic waves
B. Sound waves
C. Water waves
0 D. Light waves

Environmental differences within ecosystems are generally caused by

Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d