Based on the clue '40 is the only reading on these 2 temperature scal...', what is the answer?

What is referred to by '2 4 10 16'? What is referred to by '273 celsius'? What is associated with: 27315 degrees c? What is associated with: 27316 degrees centigrade? What is associated with: 45967 degrees fahrenheit? Based on the clue 'aceous is one of these add ons', what is the answer? What is referred to by 'and hutch'? What is referred to by 'and the crickets'?