the answer is A. I took the test and got it right. The question is specifically asking about the THIN filaments, making it actin- and only actin.
Based on our understanding, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
<h3>What is the outer ear?</h3>
Contrary to that of the inner ear, the outer ear includes the parts of this organ that do not actually influence our ability to hear. These parts include the components of the ear that we are able to see on an everyday basis, separated into three distinct parts named the tragus, helix, and lobule.
Therefore, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
To learn more about the ear visit:
brainly.com/question/7218990?referrer=searchResults
Answer: Forested
Explanation: They once occupied nearly al of the forested regions of norte americano
