Answer:
a. barking
Explanation:
they inherit that from their ancestors.
all the other characteristicscan be developed by the dog over time.
i hope this helped you
U・ᴥ・U
Answer:
development
Explanation:
im pretty sure that the answer is cognitive development motor skills and the ability to use language to communicate
Yes, you wouldnt be able to do thumb wars
Answer:the build up of thick, sticky mucus that can damage many of the body's organs.
Explanation:
Cystic fibrosis is an inherited disease characterized by the buildup of thick, sticky mucus that can damage many of the body's organs. The disorder's most common signs and symptoms include progressive damage to the respiratory system and chronic digestive system problems.