When is the Coronavirus gonna end? :)

What occupation did muhammad have before the first revelation

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?