C. Amount of oxygen
The others either change but don’t decrease or they increase.
Given the temperature, we can tell if the substance is cold or not relative to the reference temperature. For example, compared to the substance having a temperature of 15 degrees C, the substance is colder and it is hotter from the substance of temperature lesser than 12 degrees C.
They cause an increase in temp of earths atmosphere or warming by absorbing solar energy. hope this helps
It makes it easier to see in dark places
