A metamorphic rock can also be thought of as a rock that changes. What causes the rock to change? Group of answer choices

Layers of sediment building up over time and pressing down, forming rock.

The rock slowly changes over time into a new roc.

Extreme heat and pressure from deep within Earth cause changes to the rock's appearance, structure, and composition.

Rain, wind, freezing, thawing and plant roots growing cause the rock to erode away, leaving behind sediments.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1