Two main factors affect the speed of sound: the material that makes up the medium—such as air or water—and the temperature. If we know the medium and the temperature, however, we can predict the speed of sound.
Answer: I think it's competitive market economy
Explanation:
Lots of moss and spores grow here because of the damp shady environment explaining the ferns on the ground
Answer:
D)it only exists in liquid and solid form
