Migration is a behavior that is usually influenced by
a. changing seasons.
b. the phase of the moon.
c. the rise and fall of tides.
d. the time of day.

Let's take as an example the behavior of some birds, for example Storks. They live in Northern Europe in the Summer but travel South during the winter. This behaviour is actually called a seasonal migration and is dependent on the change of seasons - so the correct answer is a)

Aristotle thought so every portion of the earth tends toward the center until by compression and convergence they form a sphere. travelers going south see southern constellations rise higher above the horizon.~ hope this !

Explosive eruptions are the most hazardous, involving large volumes of tephra and gases emitted from the volcano. lahars, pyroclastic flows, ashfall, and many other volcanic hazards are commonly associated with explosive eruptions. explosive eruptions are very dangerous. basically, any form of hazard can occur.