How does cyanobacteria form soil crusts?

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

How do the sperm cells get from the stigma to the ovules?