primary
principal, primus, the first, first in order or in time of development, principal.
Origin: L. Primarius
You will also like...
Pollution in Freshwater Ecosystems
There are many environmental factors that arise due to the usage of water in one way or another and for every action that man does, there is a resultant effect on the ecosystem. In this tutorial, some scenarios where human action results in a response from the ecosystem, either physically or chemically, are described. ..
Lotic Communities & Algae
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in lotic habitats is smaller than in lentic habitats. Find out why in this tutorial...
Community Patterns
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you've learned about earlier to learn more about the possible impacts of natural and human-induced environmental changes...
The Human Physiology
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiological attributes of the human body at various levels of organization, i.e. from cellular to tissue and ultimately, physiology at the biological system level. Human physiology is important because it imparts an in-depth understanding of the vital processes that..
Freshwater Ecology
Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of communities that thrive in freshwater: the lentic and the lotic communities. In these communities, plants and animals evolved special characteristics that make them better adapted to their habitat. Get to know more about these features and the..
Freshwater Communities & Plankton
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons and the zooplanktons. Learn the differences between the two in this tutorial...