The outer layer of a cell that acts as a gatekeeper to a cell is the plasma membrane.
The plasma membrane's job is to selectively permit or restrict substances from entering or leaving the cell.
Explanation: your answer is A
Given what we know, we can confirm that Salt marshes are an example of an ecosystem service.
<h3>What is an ecosystem service?</h3>
This describes situations in ecosystems that are beneficial to human life. This example describes the way in which salt marshes provide humans with a steady and stable source of fish that are important to the fishing industry.
Therefore, we can confirm that the Salt marshes are an example of an ecosystem service.
To learn more about ecosystems visit:
brainly.com/question/1673533?referrer=searchResults
The answer is energy, I think
Cochlea.
The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the middle ear. The 8th nerve in the inner ear actually converts the mechanical energy to electrical energy for transmitting to the brain. A membrane called the tympanic membrane separates the middle ear from the outer ear. Whenever a sound reaches the ear, it creates a sound wave that creates vibration in the eardrum. The pressure when high pushes the membrane inwards while low pressure sound waves helps the eardrum to come outwards. <span>
These sound waves are then transduced when it reaches the cochlea where hair-like structures interprets the sensory information and is relayed to the brain.</span>
