The structure of the ear that conducts sound waves to the middle ear is the oval window.
D.All of these is the answer
Answer:
All of the above
Explanation:
they all flow into each other like family just trust me it is right ;)
The endosymbiotic theory states that the some cellular organelles present inside the Eukaryotic cells were once free-living prokaryotic organisms. The eukaryotic cells ingested these organisms and over time they developed a symbiotic relationship with each other. These organelles include the mitochondria and the chloroplasts. Both these organelles contain their own DNA, and produce energy.
Hence, the answer is 'mitochondria and chloroplasts'.
