Answer:
Through the period luminosity relation to Cepheid variables
Explanation:
The luminosity of a given Cepheid can be established when the period luminosity relationship is calibrated.
Their brightness is then used to find their distance
they thought that colonial will start another war
The answer is B. I believe that this is the answer because the barnacle is benefiting from the gray whale without harming, or affecting it in the process.
<span>One solution exists for the equation 3(x - 2) = 22 - x .
The solution is x = 7 .</span>
Command economy is the answer
