Why are the cave paintings of early humans significant? They give directions to rivers or hunting grounds.
They show the original calendars.
They show results of early hunts.
They give evidence of cultural, religious, or social characteristics of the people.

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u. s. and mexico. the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

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

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!