Definition noun A medical term used to refer to a condition or state in which a woman has never given birth to a child, or has never carried a pregnancy. Supplement Word origin: from Latin nūllus, none + parere, to give birth. Related forms: nulliparous (adjective). Compare: multiparity...
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
