How long should a shaft be to get an extremely high success rate for obtaining mitochondrial DNA that can be used in an investigation?

Kate is 14 years old and just started taking dance classes with her friends at a local dance studio. this is her first time in a dance program, so everything is new to her. her friends convinced her to join the class since they have been enjoying it for a few months. how could the following terms her succeed in the dance class? ● secondary reinforcement ● identity vs. role confusion ● observational learning how could the following terms hinder her success in the class? ● circadian rhythm ● basal ganglia ● vestibular sense

Which of the following is not a feature of the surface mining control and reclamation act? regulation of surface coal mines repayment of loss of benefits to ill mine workers restoration of lands to pre-mining conditions retroactivity return of land to original topography

This is a major archaeological site that was once a regional center to the mayan empire in ancient mesoamerica.