Wildfires: a) are damaging for natural environments. b) release nutrient minerals that were locked in dry organic material. c) encourage the growth of shade-resistant plants. d) result in the destruction of the underground stems and buds of grasses. e) All of the above

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

Aphase diagram assumes is kept constant.

What is the relationship between globular clusters and the milky way?