Question

Microvilli are _____. found in the lungs and are the site of gas exchange microscopic folds where nutrients are absorbed cells in the immune system that attack foreign invaders found in the gallbladder and secrete bile

Answer 1

Cells?
 Hope this helps

Answer 2

Answer:

Im not sure but

Explanation:

Microvilli are _____.

found in the gallbladder and secrete bile

cells in the immune system that attack foreign invaders

microscopic folds where nutrients are absorbed

found in the lungs and are the site of gas exchange