which of the following is the most serious effect of water pollution for humans?\na. infectious diseases\nb…

which of the following is the most serious effect of water pollution for humans?\na. infectious diseases\nb. algal blooms\nc. toxic food chain effects\nd. low - oxygen water\nplease select the best answer from the choices provided\no a\no b\no c\no d

which of the following is the most serious effect of water pollution for humans?\na. infectious diseases\nb. algal blooms\nc. toxic food chain effects\nd. low - oxygen water\nplease select the best answer from the choices provided\no a\no b\no c\no d

Answer

Answer:

A. infectious diseases

Brief Explanations:

Water - borne pathogens in polluted water can cause serious infectious diseases in humans, which directly threaten human health. Algal blooms mainly affect aquatic ecosystems, toxic food - chain effects have a more long - term and indirect impact, and low - oxygen water mainly affects aquatic life rather than directly causing the most serious harm to humans compared to infectious diseases.