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kaheart [24]
3 years ago
10

Which of the following statements is correct? See Concept 32.4 (Page 680) View Available Hint(s) Which of the following statemen

ts is correct? See Concept 32.4 (Page 680) The origin of all extant animal phyla can be traced to the Cambrian explosion. Sponges are diploblastic animals. All animals share a common ancestor. Eumetazoans have three embryonic tissue layers. Most animal phyla belong to the clade Radiata.

Biology
1 answer:
Goryan [66]3 years ago
7 0

Answer:

All animals share a common ancestor.

Explanation:

All living organisms including animals have evolved from common ancestral organism. It is evident from various researches in relation evolutionary diversification of species.  The process by which numerous variety of species are formed from a common ancestor is known as speciation. The attached diagram showing the phylogeny tree of life is a solid evidence of common ancestral origin of life.

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the outer ear channels sound waves down the external __________ to the __________, a tight membrane that vibrates in response to
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Answer:

Revisado por: Larissa Hirsch, MD

Larger text sizeLarge text sizeRegular text size  

Print

in English

Ears

¿Qué es el oído y qué hace?

El oído consta de tres partes diferentes, que funcionan conjuntamente para captar sonidos y transmitírselos al cerebro: el oído externo, el oído medio y el oído interno.

El oído externo

El oído externo está formado por el pabellón auditivo (también conocido como "pabellón auricular" o "pabellón de la oreja") y el conducto auditivo. Los pabellones auditivos son las partes visibles que tenemos a ambos lados de la cabeza y están compuestos por cartílago duro cubierto de piel. La principal función del pabellón auditivo consiste en captar sonidos y conducirlos hacia el conducto auditivo, que conecta con el oído medio. Las glándulas de la piel que recubren el interior del conducto auditivo fabrican cera o cerumen, que protege este conducto, eliminado la suciedad y ayudando a prevenir posibles infecciones.

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Explanation:

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