What are three identifying characteristics of arthropods? give an example of each in a particular animal. no copy and paste.

three identifying characteristics of arthropods are: " Jointed appendegas", "segmented" and bilateral symmetry"

Example: Scorpions have 8 jointed legs and a pair of pedipalps that are used for grasping prey and sensing.  

Example: Leechs have soft, muscular, segmented bodies that can lengthen and contract.

Example: Starfish must use its body to move quickly, and its fleeing behavior strongly reflects its bilateral propensity.

Not copy and pasted! but did do research!

!Hope It Helps!

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.