Answer:
The same
Explanation:
Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.
If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.
Hence, samples A and B have the same half life.
1 more, because in 24 hours cell A can divide 4 times and cell B can only divide 3.
We need the sun for the water can go away so basicly the sun evaporates the water
The answer of the first question is ( b. towards ).
I am not sure about the answer of the second one.
It may be ( a. alive ).
I will confirm it soon.
B. Nuclear Energy is the only logical answer