Do you mean electron? If so they are molecules that transport electrons during cellular respiration.
Answer:
i think B . more quickly than
Explanation:
The answer is d. A large asteroid or comet impacted the Eartg
Answer:
Kartegener's disorder
Explanation:
The respiratory tract has cilia which move. Sperms also have a tail that moves. They both have the same protein in their structure called microtubules. There is a disorder in which there is the absence of a part in the microtubule. Dynein arms absent in microtubules. Because the respiratory system and sperm both contain cilia that's why these two systems have a connection and not work properly.
