The wet bulb depression is the difference between the dry-bulb temperature and the wet-bulb temperature. It is measured by a psychrometer . If there is 100% humidity, dry-bulb and wet-bulb temperatures are identical, making the wet-bulb depression equal to zero in such conditions.
(In short; the difference between the temperature of a dry bulb and wet bulb.)
D it is 100 percent accurate!
The ability of carbon to form long chains is called Catenation.
Based just on the information given, 1.5 million bp.
They are called Consumers I believe hope that helps ☺