When glaciers melt, water is returned to groundwater storage by what means?
a.) condensation
b.) infiltration
c.) precipitation
d.) sublimation

B. Infiltration

Infiltration is a process in which water being on the subsurface of soil gets absorbed by the soil. This water makes way inside the ground by seeping inside the cracks and pores present in the rocks. The accumulated water becomes a reservoir of water known as ground water. Glaciers melt, water is returned to groundwater storage by means of infiltration.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.