Which is a primary function that kidneys perform for the excretory system? A. They remove waste from blood using a filtration structures
B. They process information using nerve cells
C. They perform digestion using hormones
D. They exchange oxygen for carbon dioxide using capillaries

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.

the answer is d p: cell, q: organ, r: organ system, s: tissue