Answer: Young rivers are channels that are deeper than they are wide, have a very fast flow, and contain frequent waterfalls and rapids
Answer: Homologous chromosomes are the pairs of chromosomes that having same gene sequence, equal length of arms and centromere location. Homologous chromosomes have two homolog one come from male parent and other come from female parent.
Explanation:
These chromosomes Are formed for the purpose of genetic variations. They are called homologous because when two same structured exist it form pair together
Oxygen enters the blood in the A. Bronchi.
