Net Migration Is

question 38

Multiple Choice

Net migration is

• A)the number of births per year
• B)in-migration minus out-migration
• C)migration to the cities minus migration to the suburbs
• D)the number of new immigrants

---

Definitions:

Viroids

Infectious pathogens smaller than viruses, consisting solely of a short strand of circular RNA without a protein coat.

Strands of RNA

Molecules composed of ribonucleic acid (RNA) that play crucial roles in the coding, decoding, regulation, and expression of genes.

Peptidoglycan

A modified protein or peptide having an attached carbohydrate; component of the bacterial cell wall.

Circular DNA

A type of DNA structure found in many bacteria, some viruses, and mitochondria, where the DNA forms a closed loop without free ends.