Answer :A half- life is the time required for half of the radioactive substance to undergo radioactive decay. In two half lives first half of the original sample decays then in the second half life half of what is left decays.25%
Explanation:
Most likely water because abiotic means its not a living organism
Answer:
What is the median of the data displayed in this box-and-whisker plot?
42
49
54
57
Box-and-whisker plot ranging from 34 to 58 with ticks at increments of 1. Plot defined by points at 35, 42, 49, 54, 57.
Explanation:
if the first one is zero divide it
Answer:
it breaths and pumps its heart cuz this is a sign that the following person is alive