Particulate matter is a type of pollution that comes from -a reaction with oxygen
-burning gas in a closed space
-emissions from oil refineries
-open fields or construction sites

segmentation=endoskeleton=backbone=coelom=tissues

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.

a. an idea which cannot be disproven!

explanation:

answer; lower are;