The heart valves act like doors.

truefalse

Which sequence represents a cross section of the bilayera hydrophilic head, hydrophobic tail, hydrophobic tail, hydrophilic headb hydrophobic tail, hydrophilic head, hydrophobic tail, hydrophilic headc hydrophobic head, hydrophilic tail. hydrophilic tail, hydrophobic headd hydrophilic tail, hydrophobic head, hydrophobic head, hydrophilic tail

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment