Answer:
C. They lose their gills
Explanation:
They lose their gills but grow lungs
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.
Answer:
Scabies usually is spread by direct, prolonged, skin-to-skin contact with a person who has scabies. Contact generally must be prolonged; a quick handshake or hug usually will not spread scabies. Scabies is spread easily to sexual partners and household members.