The Learning Lab - #AreYouSmarterThanATLLStudent The diagram below shows an air sac in a human lung. Blood moves along the capillary from Position X to Position Y. The blood at X has
![Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram](https://www.researchgate.net/publication/7730012/figure/fig4/AS:267546427392026@1440799447993/Pulmonary-air-sac-system-in-a-birda-Latex-injection-blue-of-the-pulmonary-system-in-a.png)
Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram
![1950s USAF CONVAIR B-36 PEACEMAKER AIRPLANE STRATEGIC AIR COMMAND SAC BOMBER NUCLEAR WEAPONS DELIVERY AIRCRAFT 1949-1959 - a365 BAU001 HARS CAPABLE CONVAIR NUCLEAR WEAPONS OLD FASHIONED PEACEMAKER SAC STRATEGIC AIR COMMAND UNITED 1950s USAF CONVAIR B-36 PEACEMAKER AIRPLANE STRATEGIC AIR COMMAND SAC BOMBER NUCLEAR WEAPONS DELIVERY AIRCRAFT 1949-1959 - a365 BAU001 HARS CAPABLE CONVAIR NUCLEAR WEAPONS OLD FASHIONED PEACEMAKER SAC STRATEGIC AIR COMMAND UNITED](https://c8.alamy.com/comp/T62PY6/1950s-usaf-convair-b-36-peacemaker-airplane-strategic-air-command-sac-bomber-nuclear-weapons-delivery-aircraft-1949-1959-a365-bau001-hars-capable-convair-nuclear-weapons-old-fashioned-peacemaker-sac-strategic-air-command-united-states-air-force-usaf-T62PY6.jpg)