Enzymes are catalysts, meaning that they are proteins that speed up reactions. So without them, there would be barely any activity.
Is this question based on fossils?
Well, I know that fossils aren't in tar, amber, or ice..
So your answer would be rock..
I hope this helps!
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:
d)organism,system,organ, tissue is from smallest to largest