Sorry I don't know just need comments to get points, desperate need of help with maths home work xx
I'd go with C because in a call all it really does is replicate and transcript C:
Signed
Sam
Answer alveoli and blood vessels
The respiratory bronchioles have single alveoli off their walls. ... The respiratory bronchioles lead into alveolar ducts, (which are surrounded by smooth muscle, elastin and collagen), which lead into the alveolar sacs. These have several alveoli, surrounded by blood vessels - from the pulmonary system.
Explanation:
comment how it helps
Answer: B. Protein production in the organism would stop.
Explanation: Ribosomes are organelles involved with synthesis of proteins. There are about 10 million ribosomes in a single cell. Therefore, absence of ribosomes would result lack of protein production by the cells or ER.
B. It was an explanation for how the earth originated.
