Which type of border shows the division between Sonora and Chihuahua? National border
State border
Physical boundary
Natural boundary

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Which one of the following research methods can show cause and effect

The ph is the a.independent variable b.the dependent variable c.control group