Ear is a sensory organ responsible for hearing and listening. It is connected by the auditory nerve which serves as the messenger of information from the sense organ to the brain specifically in the primary auditory cortex.
The ear functions because of its structure that displays and initiates many transformation and accommodation of sound waves to able to translate them and understand these sensations for sound acuity. The pinna, the eardrum, the cochlea and the most important part of the ear is the hairlike structures in the cochlea which transduces these sound waves into meaningful information (perception).
Microevolution includes evolution at the population and community level.
Earth layers crust
lithomsphere
asthenoshere
mantle
core
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The glandular swelling is found on the back of the earthworm and is called C.litellum.
An earthworm is tube shaped and it belongs to the Annelida phylum. It is usually found in the soil, where it contribute to the level of fertility of the soil by feeding on the dead organic matter and by aerating the soil. Earthworms lack internal skeletons and they are hermaphrodites.
