(Originais Teachy 2023) - Question Very Easy of Biology

Describe what protozoa and algae are, including their main characteristics and the fundamental difference between them. Additionally, identify a human disease caused by a protozoan and briefly explain how the infection occurs in the human body. Provide examples of algae that can be found in freshwater and saltwater environments and mention an ecological importance of these organisms. This question does not have an exact format for the answer, but it is expected that the student addresses the definition and characteristics of protozoa and algae, a disease caused by a protozoan with its mode of infection, and examples of algae with ecological importance.