What is the name of the closest galaxy to the Milky Way, which is also a part of the Local Group of galaxies?

What is the name for the layer of loose, unconsolidated material covering the Earth's surface and consisting of mineral and organic particles?

What is the name for the process by which rocks are dissolved by acidic water, particularly effective on limestone and other carbonate rocks?

Which layer of the Earth is responsible for the convection currents that drive plate tectonics?

Which subatomic particle is responsible for carrying electric current in a metal conductor?

Which type of rock is formed from the alteration of existing rock through heat, pressure, or mineral changes without melting?

What does the term "pascal" measure in the International System of Units (SI)?

What is the name for the process by which water from the surface of the Earth enters the atmosphere as water vapor?

What is the term for the point in a planet's orbit where it is closest to the Sun?

Which of the following is a measure of the total amount of dissolved salts in water, often used to determine water salinity?