مدرس المادة
When microorganism first associated with a host, the host is said to be "contaminated". If the microorganisms establish them selves and grow and multiply for period time, the host is said to be "infected".
If infection causes damage, the host is said to have an" infectious disease".
Ecological Interactions between Organisms in a Community: Dynamic interrelationships based on nutrition and shared habitat
SYMBIOSIS: neutral, antagonistic or synergistic relationship between two dissimilar organisms living in close association with each other. It include :
تحميل الملف