Is protista kingdom harmful or helpful?

Answer 1

The kingdom Protista contains both harmful and helpful organisms. Some protists, like certain algae, are beneficial as they produce oxygen and serve as a food source in aquatic ecosystems. However, others, such as pathogenic protozoa, can cause diseases in humans and other organisms. Thus, protists play a dual role in the environment, contributing to biodiversity and ecosystem health while also posing potential risks.