Answer:
The spectral types and sub-classes represent a temperature sequence, from hotter (O stars) to cooler (M stars), and from hotter (subclass 0) to cooler (subclass 9). The temperature defines the star's "color" and surface brightness. ... Stars are also classified by luminosity class.
Explanation:
Answer:
A breakdown in trading alliances change or loss of local culture a decrease in avilable jobs
The common geographic factor for Egypt and the fertile crescent were the big rivers, they made big alluvial deposits on their shores each year and allowed the people to have sufficient amount of food production. That opened the gates for civilizations to flourish in this places.
Answer:
Hii, well there is Mandarin, Malay, English and Tamil. But, English has been the predominant language in schools though so I assume English would be your answer.
Hope this helps!
a large area of flat unforested grassland in southeastern Europe or Siberia
