Attached is the mentioned above table. I found the exercise on the internet.
The correct answer is:
"<span>the information shown is accurate."
When birds breath in, their posterior air sacs inflate with air from the outside, and their anterior air sacs inflate with air from the lungs. When they breath out the air that was then in the posterior air sacs is now pushed to the lungs, and the air that was in the anterior air sacs is expelled through the trachea.</span>
Answer:
I don't know the exact word they want, but organisms use energy for motion and any activity they perform regularly. (eg: hunting, climbing, digging, etc.)
The answer to your question is B. Crossing over occurs when homologous chromosomes pair up and exchange genetic material at the chiasmata (site of exchange).