Which probing question lies within the scope of physics? Ο Α.
Are fish in the open ocean attracted by underwater sounds?
OB.
Does increasing the saltiness of ocean water affect the speed of sound in the water?
Oc. What effect does the release of industrial wastewater have on the acidity of oceans?
OD.
What is the effect of rising sea temperatures on ocean currents?

The answer is OB, Does the saltiness of ocean water affect the speed of sound in the water.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.