Travelers between canada and the united states must on goods brought in from the other country.

Which environment would most likely not contain fossils? a a thick deposit of cracked, dried mud b sediment deposited in a sandy river bed c intrusive rock formed from cooled magma d layers of sand accumulated for a century

Witch one is it soo it the the question b.a,b,c,d

What causes the cyclical changes in the appearance of the moon?