Which fossil fuel is causing the most pollution? PLEASE HELP TIS ASSIGNMENT IS PAST DUE I NEED HELP

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer