At sea level, sound waves can travel through air at about 340 m/s. Light waves can travel at about 300,000,000 m/s. Use this information to explain one reason phones can be used to extend humans' ability to hear one another over long distances.

Plants that have reproductive structures called cones are?

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land