3.4 the coldest recorder temperature on earth in a natural environment is about -90 c. at what frequency, is the standard kpt for thermal noise power spectral density approximation wrong by 10 %?

How did the europeans design the national borders of africa? why?

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )

The incident command system (ics) is: a. most applicable to the management of complex incidents that extend over many hours or days. b. a military system used in domestic incidents to ensure command and control of federal resources. c. a standardized management tool for meeting the demands of small or large emergency or nonemergency situations. d. a relatively new approach created based on the lessons learned from hurricane harvey disaster operations.