What’s the main source of energy for our planet is/are

The series of transgressions and regressions that produce cyclothems were likely produced by

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give