Answer:
1:2:1 is the genetic crosses
Explanation:
The interior of the lungs is made up of spongy tissues containing many capillaries and around 30 million tiny sacs known as alveoli.
The alveoli are cup-shaped structures found at the end of the terminal bronchioles and surrounded by capillaries.
Explanation:
red blood cells,white blood cells and platelets
Answer: B
Explanation:
carbon monoxide is poison and can kill you