Answer honestly.
if me and my friend knew that we both liked each other more than friends but have never stated it. and were sitting down talking how would i know that he wants to kiss me or how do i make him know that i want to kiss id prefer boys to answer since its coming from their perspective.

The answer is 3,5g co

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Ibelieve its because the stove is a cleaner burning fuel

The answer you are looking for is option d