I would say D, but I could be wrong
Light waves or gravitational waves sorry if not correct
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]
<span>If the hydrogen pump protein in photosystem II does not move enough H+ ions into the thylakoid there will be a decreased in the production of ATP and a decrease in the production of NADPH.</span>
Answer:
Rock 1 is older than Rock 2, and the mineral grains became smaller over time.
Explanation:
i just took the test.