Answer:
iron
Your water might be affected by iron, which is a commonly-occurring constituent of drinking water. Iron tends to add a rusty, reddish-brown (or sometimes yellow) color to water. If the color is more black than red, your water might contain a combination of iron and manganese.
Computer-aided engineering (CAE) and finite element analysis (FEA) Computer-aided manufacturing (CAM) including instructions to computer numerical control (CNC) machines. Photorealistic rendering and motion simulation. Document management and revision control using product data management (PDM).
Answer:
Answers all of them? or a certain one
B. To reinforce your interest in the position and thank your interviewer
