Answer:If the the Earth were smaller than it is and the Alexandria-to-Syene distance were the same, the shadow of the vertical pillar in Alexandria would be longer.
d. are demonstrating a feature of stream immaturity [meanders] in a mature setting [steep walls].
Explanation:
Incised Meander is a river meander which has been cut abnormally into landscape because uplift of land has caused downward erosion by the river. This represents stream immaturity and level of rivers is not stable.
The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun. The Earth has a tilt of 23.5 degrees relative to the "ecliptic plane"