What is the correct definition of a gene?

What occupation did muhammad have before the first revelation

Imagine a rocket launching from earth and travelling to the moon. in which order would the rocket pass through the layers of the atmosphere? thermosphere, mesosphere, stratosphere, troposphere troposphere, mesosphere, stratosphere, troposphere thermosphere, stratosphere, mesosphere, troposphere troposphere, stratosphere, mesosphere, thermosphere

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