Please helpp ill mark brainstt and like A geologist logbook contained the observations below. based on these observations, what type of formation is the geologist studying?

- The rock layers on either side of the formation are the same age.
- The ocean floor is wider now than in the past.
- There is evidence of recent, minor volcanic activity.

A ) A mid - ocean ridge.
B ) An island
C ) A trench
D ) A coral reef

Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

What would be the original temperature of a gas that has a volume of 2.0 l and a pressure of 2.0 atm and an unknown temperature that the volume increased to 3.5 l in its pressure decreased to 1.0 atm if the final temperature is measured to be 11°c