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
Mexico is south of the US and speaks Spanish
Answer:
Because brackish water has less salt in it and it does not have to use as much energy to seperate them.
Explanation:
Answer:
It is known as The Sahel, also known as ساحل in Arabic.
Explanation:
