Answer:
The last one is correct (I think)
Explanation:
The plant absorbes the sunlight and releases Oxygen as a byproduct
polar ice and grass land because
If the inner lining of the air sacs neither thin nor highly vascularized, then it can be inferred that AIR SACS ARE CANNOT BE THE SITES OF GASEOUS EXCHANGE BETWEEN AIR AND BLOOD. Air sacs are generally lined with mucus and surrounded with blood capillaries.
In case of birds, air sacs play an important role in respiratory system.
1 because there’s more absorption meaning less water to runoff
