Iwill give brainliest and ! for reading how do you grade a test i know how to get the percentage but how do you get a+ a a- b+ b b- etc you ; )

Summarize the work of famous environmental scientists of the past.

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.

Which of the following is a difference between a prepaid tution plan and a college savings plan