Which of the following is true about radio waves?
A. Radio waves can carry energy through the vacuum of space but not through matter.
B. Radio waves can carry energy through both matter and the vacuum of space.
C. Radio waves can carry energy through matter but not through the vacuum of space.
D. Radio waves carry energy through neither matter nor the vacuum of space.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion