Does anyone know this? I picked arkansa and North Carolina Graduation rates vary from state to state in the United States. Based on the statistics for the two states you selected, identify at least one potential reason for this variance.

Poverty rates

Explanation:

A lower income city, town, or even region might have less money to spend on school and education. So kids don't feel nessisary or even bad to go to school as they face going broke and running out of food, kids work because their parents work themselves into injuries or can't work at all.  Kids see school as 7 hours of money gone and loss of providing food for their family. So they drop out to stay alive.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.