What is a group of protons and neutrons in the center of all atoms?

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?

How do ratio scale and diagrammatic scale work