To trace the occurrence of a trait through several generations of a family you could create a

What protects the lining of the stomach from acidic gastric juices?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions