What is one way that scientists ensure reliability in their experiments? a. Scientists can perform the experiment before making a hypothesis to ensure
they are correct.
b. Scientists make sure to only use the highest quality tools.
C. Scientists can run multiple trials of the experiment to verify the results.
d. Scientists run the experiment only once so they don't get too much data.

The answer is tea due to the main ingredient being a herb that grows from the ground and sugar that grows from a stalk, i hope this : )     p.s.  can i be brainliest?

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.