Which of the following statements about layers in the atmosphere is true of the troposhere? Select one:
O a. This layer is the least dense layer of the atmosphere.
O b. Most of Earth's weather occurs in this layer.
O c. In this layer, temperature increases as altitude increases.
O d. This layer is the warmest layer of the atmosphere.

Identify what happens to light in this model of the greenhouse effect

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.