I think your answer would be b.
Answer:
Wheels Working Together The Mayan Calendar consists of three separate corresponding calendars: the Long Count, the Tzolkin (divine calendar), and the Haab (civil calendar). Each of them is cyclical, meaning that a certain number of days must occur before a new cycle can begin. The three calendars are used simultaneously.
Explanation:
Cambodia, the Mekong and the Tonle Sap dominate the life and economy of Cambodia
I think it is the Biospere
A planetary nebula is a (ring-shaped) type of nebula formed by an expanding shell of gas around an aging star. *a planetary nebula is a type of nebula*. im not completely certain though. i might be wrong.
