Answer:
The mass of a proton in scientific notation, is 1.67×10-27kg.
Explanation:
I am pretty sure it is CD4 cell
Your answer will be interphase .
Answer:
Option C
Explanation:
The null hypothesis is the problem statement and alternative hypothesis is counter of the null hypothesis.
Hence, the null hypothesis here is the rate of extinction was neither higher nor lower when there were sudden climatic changes (asteroid strike)
And alternate hypothesis is "the rate of extinction was either higher or lower when there were sudden climatic changes (asteroid strike)"
Hence, option C is correct
Rocks? not quite sure about this one but good luck and hope this helps! :)