Living species are alive and their species still have members, while extinct species no longer are living, and no more of their members exist.
Answer:
Mesophyll is not a tissue technically speaking. It's just a place, a specific area. Or you can even think of it as the set of all tissues in a given area.
In DNA Nucletide monomer are linked to the next through covalent bonds
Hope this helps!
Answer:
While exercise is a common cause of muscle fatigue, this symptom can be the result of other health conditions, too.
Causes of muscle fatigue
Addison's disease.
age.
anaerobic infections.
anemia.
anxiety.
botulism.
cerebral palsy.
chemotherapy.
