All indian guys look the sameWich one is better MEXICAN or INDIAN

Why did southern business leaders want to increase the number of slaves

When balancing a chemical equation:

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.