Scientists have believed for many years that water pressure increases as water depth increases. what experimental method would best test this hypothesis, and why?
1. bring samples of ocean water from various depths to the lab and measure the pressure of each sample, because this most directly measures ocean pressures
2.send a robot to measure the pressure of the ocean at various depths and plot the data on a graph, because ocean pressure may change with depth
3.capture fish from various ocean depths and measure how much internal pressure is found in their tissues, because this directly measures pressures in living systems
4.collect rocks from various ocean depths and determine how much pressure was present during the rocks' formation, because rocks do not change once they are formed

The correct method is option 2, that is, send a robot to measure the pressure of the ocean at various depths and plot the data on a graph, because ocean pressure may change with depth

Explanation:

It has been known for numerous years that the pressure of the water enhances as the depth of the water increases. Thus, sending a robot to determine the pressure of the ocean at different levels of depth would be an appropriate way from the given options, as the pressure of the ocean may get change with depth.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: