What plant or animal is microscopic?

* Algae: Microscopic algae are abundant in both marine and freshwater environments, and they come in a wide variety of shapes and sizes. Some common examples of microscopic algae include diatoms, dinoflagellates, and cyanobacteria.

* Protozoa: Protozoa are a diverse group of single-celled organisms that are found in all types of habitats, including soil, water, and even the human body. They feed on other microorganisms and play an important role in the food chain. Some common examples of microscopic protozoa include amoebas, paramecia, and euglena.

* Bacteria: Bacteria are single-celled microorganisms that are found in almost every environment on Earth. They come in a wide variety of shapes and sizes, and they play a crucial role in the decomposition of organic matter, nitrogen fixation, and the production of oxygen. Some common examples of microscopic bacteria include E. coli, Bacillus subtilis, and Staphylococcus aureus.

* Fungi: Fungi include yeast, molds, and fleshy fungi. Some microscopic fungi include Aspergillus, Penicillium, and Candida.

* Microinvertebrates: Microinvertebrates are microscopic animals that include rotifers, nematodes, and tardigrades.

* Plankton: Plankton are a diverse group of microscopic organisms that live in the water. Some examples of plankton include diatoms, dinoflagellates, and copepods.