Dr. Paul B. Weisz, a 28-year-old refuges from Austria now serving as assistant professor of biology at Brown University, Providence, R.I., has discovered what may roughly he termed a third ...
Protozoa are small, single-celled organisms that live in moist environments, such as ponds, swamps, and soils. They can survive themselves or sometimes live as a parasite inside the plants or animals.
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