If a scientist knows the relative age of a fossil, he can also know a. the relative age of the rock where it was found. b. how it became extinct. c. how long the organism was alive. d. the type of climate from which it came.

Which of the following is a cause of a dna mutation? o a. the linking of amino acid subunits into a long chain o b. the transcription of dna into rna o c. an error in the repair of damaged dna d. the diffusion of molecules across the cell membrane submit

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

Which enzymes break down carbohydrates?