Answer:
Ok... thanks for the points
Explanation:
DNA microarrays allow the rapid and simultaneously SCREENING of many thousands of genes.
Direct observation is an observation you make first hand. It is something you see with your own eyes and observe yourself.
Hope this helps!
Answer:
Adaptations of the alveoli:
Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through. Extensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
