Sonar testing has caused whales to die in mass amounts.
Answer:
It is B!!!
Explanation:
The whole quiz - because i got i believe 2 wrong cause of wrong people :/
1. C
2. D
3. B
4. C
5. C
Lack of antibodies because thats the stuff to fight things away
Answer:
The alveolar membrane- is where gas exchange between the blood and the atmosphere takes place. The gas molecules must diffuse across the alveolar epithelium and the capillary endothelium. ... Thus, the alveolar surface (as well as the respiratory bronchioles) have no cilia or mucus layer.
Explanation:
hope it helps =)