Because an objects mass is the same anywhere in the universe.
Scientists rely on mass rather than weight because mass is an intrinsic property of matter that remains constant regardless of the gravitational force acting on the object. Weight, on the other hand, is the force exerted on an object due to gravity, so it can vary depending on the strength of gravity at the location of the object. This makes mass a more reliable and universal measure of the amount of matter an object contains.
Scientists prefer to rely on mass instead of weight when measuring because weight will change depending on location, whereas mass remains constant regardless of location. You could weigh 60 pounds on earth, but 10 pounds on the moon, but your mass would be the same on earth and the moon.
No. but mass is mesured in weight on earth, cause of a standard. mass is the build upp of the atoms that makes an objekt. weight is from gravity. balistic is affekted by mass.
Mass and gravity. F = ma. Weight is a measurement of the force a mass exerts downwards due to the effect of gravity.
Scientists must rely on estimates when they cannot obtain exact numbers.
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Scientists might conduct multiple trial experiments rather than rely on a single trial because if there are different out comes you can choose the most common one.
They rely on there conclusions based on Observations.
answer
Scientists rely primarily on the fossil record to determine evolutionary history. Another way of determination is examining the genetic record.
Biology!
an approximation.