Schist has the highest metamorphic grade.
The Mekong River flows through the countries China, Myanmar, Thailand, Laos, Cambodia, and Viet Nam.
Answer: Combats social exclusion and discrimination. Promotes scientific and technological progress.
The O stars is the most luminous, then B, then A, F, G, K, and M stars are the least luminous_____ there must be a relationship between mass and luminosity.
Earth is called a unique planet since it is the only planet in the solar system which supports life due to its balanced proportions of water, temperature, and oxygen
