Which activity involves using fossil fuels directly or indirectly? 1)eating fresh fruit for a snack 2)cooking hot dogs on a campfire 3)using crayons to color 4)walking to school

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units