Answer : Infrared rays have a shorter wavelength than radio waves.
Explanation :
The wavelength of Infrared rays is 700 nm – 1 mm
The wavelength of X- rays is 0.01 nm – 10 nm
The wavelength of UV rays is 10 nm – 400 nm
The wavelength of radio waves is 1 meter – 100,000 km
The wavelength of gamma rays is less than 0.01 nm
So, from the above data it is clear that the wavelength of the infrared rays have a wavelength shorter than the radio waves.
Hence, the correct option is (C) " radio waves ".
It is most likely C as A and B do not make sense.
Answer: d. the low air pressure lowers the boiling point
Explanation:
Note that there cannot be less than 6.1 millibars of liquid water. This fact is important because the Martian surface atmospheric pressure hovers just below that value. Any water that could form from melting water on a warm afternoon will easily vanish into the desiccated Martian atmosphere.
I believe that would be option C. hemoconcentration.
Hope it helps!