Hey there!
Your answer: Available Space
The question is asking, which of the following options would be a (limited source). We have to find a option that has a limited source, which means that there is a limit to something. Your answer is (b) because there are limited space with the spce that is already available. Air temperature would NOT be your answer.
Because it's where they live.
A. The argument recently in science has been the rising levels of carbon dioxide which is major component of climate change
the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.