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]
The choices can be found elsewhere and as follows:
<span>atural and synthetic
metabolites and nonmetabolites
proteins, carbohydrates, lipids, and nucleic acids
organic compounds and inorganic compounds
I think the correct answer from the choices is the third option. The c</span>lassifications of matter used In the 1800 are proteins, carbohydrates, lipids, and nucleic acids. Hope this helps.
Answer:
Do plants undergo photosynthesis, cellular respiration or both? plants undergoes both photosynthesis and cellular respiration
Explanation:
Plants are autotrophs i.e they produce food for themselves through a process called photosynthesis. Cellular respiration occurs both in plants and animals, it allows the conversion of adenosine diphosphate (ADP) into adenosine triphosphate (ATP). Plants needs energy which calls for it to undergo a chemical reaction called cellular respiration
ATP can't store large amounts of energy for long periods of time.