This one is D- “Viet, who desperately needed an idea for his paper, had a moment of brilliance at lunchtime.”
Answer:
d
Explanation:
making a phone will take time
Answer:
Allan Sandage
Explanation:
Allan Sandage is an american astronomer that has undertaken extensive efforts to evaluate Hubble's constant rate of universe expansion.
in the beginning of his career in 1958 , the primary focus of Allan is to evaluate the Hubble's constant rate.
He used many different techniques to determine the distance to several galaxies. From these many different calculations, average value of Hubble's constant was about 50 km/sec/megaparsec.
Answer:
primary source
Explanation:
Primary source -
In the field of history , a primary source is considered to be the autobiography , manuscript , diary , document , artifact etc. ,
These are the very first , original and the purest form of information , from which various conclusion can be drawn about a particular topic.
Hence, from the given statement of the question,
The correct term is primary source.
