There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Your heart beats over 36 million times a year.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Adaptations to the Environment
Deficient knowledge in using crutches
Human Activities and the Environment
Testing Infants’ Knowledge
Self-esteem for Grade 3 and 4 children in Harter\'s studies