Pls help me(this is world geography)

[fw.02]sinkholes are often formed as a result of the actions of. a. heat on recharge b. pressure on aquifers c. acid in groundwater d. minerals in hot springs

Seasons are a result of: a.) earths rotation on its axis b.)earths tilt on its axis c.) global air circulation patterns d.) global humidity circulation patterns

Ascientist makes a map using gis. one layer is an aerial photograph of farmland. other layers show water level changes and how crop cover has changed over time. what might the scientist be studying?