The respiratory membrane is a combination of a. atria and alveolar sacs b. respiratory bronchioles and alveolar sacs c. alveolar and capillary walls and their fused basement membranes d. respiratory bronchioles and alveolar ducts

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

Compare the composition of the moon's surface with the composition of the earth's surface.

20 the compound al(nh3)2 has atoms of nitrogen.