Which phrase best describes a point source of air pollution?

O

A. Smokestack releasing dioxins from a plastics factory

O

B. Automobiles releasing sulfur dioxide throughout a city

O

C. Fertilized lawns causing nutrient runoff into a river

O

D. Pipes releasing wastewater from an industrial area

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice