The external ear structure is called the Pinna.
The Pinna helps to channel sound waves into the ear.
Many animals have the ability to move their pinna towards the direction of sound.
I have attached an image of a dog's ear to show you the external structure called the Pinna.
I hope this helps! I'm happy to answer any other questions you might have :)
[Image sourced from: https://www.msdvetmanual.com/dog-owners/ear-disorders-of-dogs/ear-structure-and-function-in-dogs]
Answer:
The shape of an enzyme also depends on its temperature. When enzymes get too warm, they get too loose. And when they get too cold, then they get too tight. <u> Since the function of this enzyme depends on its temperature, the chemical reaction will only take place when the temperature is just right.</u>
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<u>Hope this helped</u>
Natural gas
explanation:
solar power, coal, and petroleum are used to power things (i.e. produce electricity)