What is the most common type of rock found on the earth's crust

What is a boundary between geologic units called

If you start at the equator and travel to 10 degrees north, approximately how many kilometers north of the equator will you be?

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness." —declaration of independence how does this quote from the declaration of independence explain the idea of natural rights?