Which geographic effect results from variations in solar insolation related to Earth's orbit around the Sun?

💡 Explanation

When Earth's orbit changes proximity to the Sun, variations in insolation effect how much energy Earth receives because proximity drastically scales light and heat intensity related to orbit position. Therefore, seasonal temperature variations correctly explains this relation and effect, rather than salinity, subduction or volcanic activity occurring which depend on other mechanisms.

• Which effect increases when humid air flows poleward?
• Which mechanism primarily drives deep ocean thermohaline circulation downwelling in polar regions?
• Which risk increases when groundwater is extracted along an active normal fault?
• Which outcome occurs when subsurface pressure exceeds frictional strength along a fault?
• Which risk increases near a volcano with a silica-rich lava dome growing within its caldera?
• Which risk increases when highly viscous magma generates pyroclastic flows?