( Please give me a good answer) How are index fossils and rock layers used to support relative dating?

Macbeth and lady macbeth are partners in the nurder of duncan and both become

What type of coastline is commonly found along the western side of the america’s

What must happen for new french words to be published in official dictionaries? a. they must be approved by the french academy b. they must be voted on by the people of france c. they must be used by famous french writers d. they must be used by philosophers a. they must be approved by the french academy