Describe one way that a decrease in species diversity can affect an ecosystem

one way can affect the species itself by creating a new species if said species becomes too diverse and will not be able to reproduce

Explanation:

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.