Which of these is the best example of deposition? A
Acid rain changes the chemical composition of limestone.

B
Flowing water wears away the sharp edges of river rocks.

C
A glacier melts and drops the sediment it was carrying.

D
Water seeps into cracks in a rock, freezes and melts.

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.

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.