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V125BC [204]
3 years ago
8

What happens when sand and gravel roll along a river bed?

Biology
1 answer:
Anettt [7]3 years ago
5 0
It serves as a barrier to biological activity.  
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Why is exposure more harmful to the fetus than mother
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Answer:The mother's antibodies can destroy the red blood cells of the fetus.

Explanation:

If a woman with an Rh negative (Rh-) blood group has a child with an Rh positive (Rh +) male, there is a possibility that the child is also Rh +. Although this has no consequences throughout pregnancy itself, as the mother's and fetus's blood does not come into direct contact during pregnancy, it can have serious consequences for subsequent pregnancies.

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3 years ago
When light hits a plant, all of the wavelengths of light are absorbed by chlorophyll. Select one: True False
4vir4ik [10]
That statement is false
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Hope this helped
6 0
3 years ago
Cómo podría haber derivado la rana venenosa geográficamente de un área diferente en el mundo?
Alona [7]

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a través de introducción antrópica

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La introducción antrópica es decir, la acción del hombre (muchas veces de modo intencional), es la causa más común por la cual una especie exótica puede colonizar un nuevo ambiente. Generalmente, las especies exóticas compiten con especies autóctonas por la disponibilidad de recursos (alimento, hábitat, etc). Las especie invasoras que se adaptan a nuevos ambientes a menudo incrementan rapidamente su rango de distribución ya que el ecosistema no posee los mecanismos naturales para evitar su crecimiento poblacional (por ejemplo, presencia de depredadores adaptados para cazar la nueva especie). Como consecuencia de este proceso, una especie invasora puede convertirse en un serio riesgo para la biodiversidad y el equilibrio del ecosistema, causando muchas veces la extinción de especies autóctonas que son esenciales en la cadena trófica del ecosistema.

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