Physical maps is the answer I hope
Answer:
D
Question:
You observed three different star clusters and found that the main-sequence turnoff stars in cluster 1 had spectral type A, the main-sequence turnoff stars in cluster 2 had spectral type B, and the main-sequence turnoff stars in cluster 3 had spectral type G. Which star cluster is the oldest?
A.) cluster 1
B.) It is impossible to determine their ages given only the spectral types
C.) cluster 2
D.) cluster 3
Explanation:
the answer to this question is option D, Cluster 3
the farther a star cluster gets away from where they are were born the easier it is to estimate how old they are based of the spectral type they are coded with using the HR diagram
Also, the spectral sequence O, B, A, F, G, K, M is the sequence of temperatures where beginning with letter O being the Hottest and letter M being the coolest. Younger Star clusters are hotter while cooler star clusters are older
The equator passes through 13 countries , these include Ecuador, Colombia, Brazil, Sao Tome & Principe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Somalia, Maldives, Indonesia and Kiribati. the Places near equator observe little variation in seasons. they have the same day and night variations.
Rice needs to grow o a warmm tropical climate