The exchange of carbon dioxide and oxygen in the alveoli of the lungs is an example of what? A) Active Transport
B) Exocytosis
C) Osmosis
D) Diffusion

i think it's A

Explanation:

also can u help me out with this

Reread the last 2 paragraphs 9The next day, Carina walked into Coach Winder's office and handed him a slip of paper. Coach Winder's eyes widened as he read it. Then, he closed the note and shook his head approvingly, 11 That's right, Carina said with a smilend like Roberto to serve as co-captain of the team

How does the MOOD change in the last 2 paragraphs

A) At first we are UNSURE of what Carina Windowand then we are DISAPPOINTED in her

B) We start off being CONFIDENT about what canina will do, and then we are RELIEVED because she quits

C) We begin CURIOUS about what caninas going to and then we are SURPRISED by her decision

D) In the first paragraph we are BORED and in the second, we are HAPPY that the story is over

A.

Please mark brainliest and i'll be happy to help you another time! :D

Hope you have a great day ^u^

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]