All of the following are characteristics of birds' bones except:
a. many have air spaces
b. many are fused together
c. the breastbone is minimized
d. they are strengthened by struts within the bone

16 select the correct answer from each drop-down menu. sharks, whales, and dolphins share similar features such as body shape and the position of fins. hoy while whales and dolphins have lungs. these differences indicate that the organisms share a comme whales also possess a vestigial pelvic bone. the presence of the pelvis bone may indicate that whales reset next