During a sunny afternoon, the sun suddenly seems much less bright than usual. The daylight seems much less intense, as if there is a dense cloud cover, but there are no clouds in the sky. After about a half hour, everything seems normal again. Which claim about the temporary decrease in light can be supported by the evidence?
O The moon was passing between the sun and Earth
O An airplane was flying overhead and blocked the light from the sun
O There are variations in the amount of light produced by the sun
O A sudden change in temperature increased the density of the atmosphere

How does convection affect our atmosphere? our layers of earth? our oceans?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents