How to get more water pressure in shower?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Define the terms moral development and moral reasoning