PLEASE HELP IM ON A TIME LIMIT Which mathematical statement shows the relationship between gravity and mass?

F g ~d^/m
F g~m/d^2
F g ~ m/d
F g ~m^2/d

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

How have the greenhouse gasses increased from the year 2000 to 2018

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays