There are a few different types of cell-cell interactions. Some of these interactions are meant for big molecules that enter and exit the cell called, endocytosis (entering the cell) and exocytosis (exiting the cell). For smaller particles like amino acids, water, ions and other solutes there are different types of direct contact between the cells called gap junctions.
Answer:
ANSWER E. a and c are the answer to this question
sulfate-sulfur atom surrounded by 4 oxygen atoms
carbonate-minerals that contain carbon and oxygen
sulfide-compounds combined with element sulfur
halides-table salt is an example of this type of mineral
The windpipe is the trachea