How can modeling crustal deformation of Earth by plate tectonics be used to analyze and hypothesize the causes of earthquakes

What are the similarities of physical and chemical change ?

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

Ab c or d ? i’m not sure what the answer is