Please help! The effects of acid mine drainage may vary drastically between dry and wet seasons. If a stream with AMD contamination undergoes considerable evaporation, explain how this will affect the pH of the stream. Will this affect the precipitation of Fe(OH)3 (assuming adequate limestone is present)? If so, explain how. Explain how temperature changes could affect the precipitation of Fe(OH)3.

Iknow the answer is a but i don't know why

Which best describes how johannes kepler developed his laws of planetary motion

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.