in 3-5 sentences, identify one human activity that has increased the amount of lead in drinking water. then explain the water filtration method best suited to remove
lead from the drinking water supply

The use of water pipes or taps causes lead to contaminate tap or drinking water.

Explanation:

The best measure that should be taken to reduce lead in drinking water is to use COLD tap water instead of warm or hot tap water, and before using tap water for drinking or cooking, flush the cold water from the tap for about TWO minutes. If possible, combine multiple methods. If possible, to use a water filter.

answer; ///(b) it is composed of four protein chains and four heme groups;

i believe the answer is c