Which statement is true about the speed of light? A: Light travels relatively slowly.

B: Distance in space is measured using the speed of light.

C: Time in space is measured using the speed of light.

D: The speed of light is unknown.

What are hormones? a. they are minerals needed for proper bone formation. b. they are the parts of the body targeted by endocrine glands. c. they are substances needed for muscle and nerve activity. d. they are substances released by endocrine glands.

Energy needs, in total kilocalories per day, are greater during than any other time of life. a.childhood b.infancy c.adulthood d.adolescence

Why girls are tan and why they fake tan