Question

what class of water pollution includes live, disease-causing organisms found in human waste and animal waste products? heavy metals plant nutrients infectious agents soil and silt

Explanation:

• Heavy metals are toxic metallic substances, not live disease - causing organisms.
• Plant nutrients are substances like nitrogen and phosphorus that help plants grow, not related to disease - causing organisms from waste.
• Infectious agents are live, disease - causing organisms. Human and animal waste can contain such agents (like bacteria, viruses, etc.) that cause water pollution.
• Soil and silt are sediment - type pollutants, not live disease - causing organisms.

Answer:

C. infectious agents