Could an owl pellet ever be something used to study fossil records? why or why not?

Providing immunity by injecting the body with a weakened form a pathogen is known as

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.