un organismo que deriva sus requerimientos nutricionales de sustancias orgánicas complejas.
Answer:
A
Explanation:
Because its not low it be high
The correct answer is that when a species is made up of different smaller groups, each of those smaller groups is known as a variety.
Answer:
Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.
