Answer:
species richness is the number of species in an ecosystem
Emir is most probably taking a class on human anatomy. Human anatomy involves all the structures in the composition of the human body. Human anatomy can be studied either by systems (i.e. cardiovascular system, respiratory system, etc.) or by regions (i.e. thoracic anatomy, abdominal anatomy, pelvic anatomy, head and neck anatomy, etc.) depending on the course.
A virus is a tiny organism and may lead to mild-severe illnesses in animals or plants or humans.
Biologically we can term virus as a bit of RNA or DNA in a protein coat. It cannot replicate without another organism.
If we use an image of indicator, we may say yes virus is living. This is because the virus particle is non-cellular but has an NDA core.This core is enclosed in a protein coat and it has spike-like projections in all over its surface.
