The photograph shows a consequence of air pollution.

Type the correct answer in the box. use numerals instead of words. fiona has a lovely flower bed in her yard. she wants to add a fence along one side of the flower bed. the fence material is sold in meters. fiona knows that her flower bed is 200 centimeters in length. how much fencing material does fiona need in meters? fiona needs meters of fencing material for her flower bed.

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?