If the weather forecaster tells you that the pressure is falling, what is the air density doing? uncertain increasing decreasing remaining constant

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.