Describe how protists are helpful and harmful to humans and other organisms ( put this in a paragraph please)
Also describe how fungi are helpful and harmful to humans and other organisms. ( put this in a paragraph also please)

Plant-like protists produce almost one-half of the oxygen on the planet through photosynthesis. Other protists decompose and recycle nutrients that humans need to live.  For example, medicines made from protists are used in treatment of high blood pressure, digestion problems, ulcers, and arthritis. Fungi are very important ecologically, because they are one of the most important decomposers in most ecosystems. They help to break down plant fibers such as dead leaves and wood and allow the nutrients to be released into the soil. Fungi are useful to humans because they have economic value.

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Explanation:

sex cells are usually half's then they find another half and make a fertilize egg