Rain causing streams to flood would be an example of an example of an interaction between the two spheres, nnamely
a. hydrosphere and atmosphere.
b. atmosphere and cryosphere.
c. biosphere and hydrosphere.
d. hydrosphere and grosphere

(my guess is

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.