The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem. A great variety of genes and species means that the ecosystem is better able to carry out natural processes in the face of external stress. Thus, the ecosystem is more sustainable.
The superscript of element Cl⁻ indicates it is a negative ion.
Answer:
In my opinion, people smoke because they're "crazy" and need some "help."
They smoke maybe because the cigar is "good" or something...
The answer does the question is : C