Ineed to check my
what is the mass for
paperclip, red book, block, pencil, calculator, green blob, penny, quarter, dime, and a nickel?

paper clip is .5 grams, penny is around 2.5 grams and a pencil is around 6-7 grams. sry that's all I know

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

i would say b

explanation:

but i think i would need more information than that