Usually, a sliding plate boundary(conservative boundary) causes earthquakes, while spreading plate boundaries(constructive) usually cause shield volcanoes.
Answer:
absolute brightness
Explanation:
The observational fact about a cepheid variable star that leads to a measurement of its distance from earth is that its period of variation is directly related to its absolute brightness
Answer: Narmada
I might not be right but I came across this question A while ago so..
Https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjascq6vOLM...
You will find the information you need here. :3 Good luck!
(Says I have to cite my sources so here goes: I just copy/pasted your question into Google lol)
