Answer:
Mass number
Explanation:
Isotopes have the same number of protons and electrons but different no. Of neutrons. As mass number = protons +neutrons.
Mass number should differ.
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Please mark as brainliest if possible
Im pretty sure its
A. Number of Organisms
B. Amount of Matter
A million sorrys if im wrong :(
The answer is D The ureter connects the kidney to the urinary bladder
Agricultural chemicals is an example of a nonpit source of freshwater pollution
