El nino only affects one country at a time.
a. true
b. false

What id the primary human cause of the global warming a. storage of nuclear fuel rods b. burning of fossil fuels c. building of high-density housing d. violent conflicts over natural resources

The strong tendency of certain minerals to break along smooth, parallel planes is known

Which of the following best describes the term cleavage? a. cleavage describes the quality and amount of light reflected from a mineral surface. b. cleavage is the characteristic growth pattern or shape of a mineral. c. cleavage is the splitting of minerals along natural planes of weakness.d. cleavage is the colored mark that a mineral makes when scratched on a porcelain tile.e. cleavage describes a mineral's resistance to abrasion.