Which of the following statements is true?

Caves are formed through oxidation.
The movement of sediment is called weathering.
Water expands when it freezes.
Rocks usually absorb heat evenly.

Exposed great deposits of coal and iron ore

The war began as a fight between mayans and the landowners of the country. the main causes of the guatemalan civil war was started by the greed of the united fruit company, the fear of communism, and the racism toward the  mayan  people.

Answer the above statement is correct (true);