<span>Hi,
What disease makes the air sacs in the lungs less elastic reducing their ability to absorb oxygen ?
</span><span>chronic bronchitis and emphysema (COPD)</span>
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
You refer to the first generation of offspring as F1.
<span> B.a medical condition that may occur due to a chemical imbalance in the brain</span>