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igomit [66]
3 years ago
7

Which is abiotic? A). Tree Sap B). Insect C). sunlight D). Wood Table

Biology
1 answer:
Ainat [17]3 years ago
5 0
Tree sap and insect are living and a wood table used to be living but sunlight is neither alive nor dead so sunlight is your answer.
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3 years ago
As water is cooled from 4° C to 0° C, its density
expeople1 [14]

Answer:

I believe that it increases (becoming more dense)

Explanation:

Well 0°C is freezing point so I think that in that state it will become a solid from a liquid and freeze into ice.

7 0
3 years ago
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En los alérgicos, a partir del segundo contacto con el alérgeno cuando se produce la reacción alérgica. ¿Cómo podrías explicarlo
dem82 [27]

Answer:

La segunda exposición desencadena la fase de 'respuesta' asociada a la reacción alérgica  

Explanation:

La alergia se puede considerar como una respuesta desmedida del sistema inmune cuando un individuo entra en contacto con ciertas sustancias que son inocuas para la mayoría de la población, pero que en personas alérgicas desencadenan fuertes reacciones de hipersensibilidad. La alergia tiene dos fases conocidas como fase de sensibilización y fase de respuesta. La primera fase de sensibilización es donde el individuo entra en contacto con los 'antígenos' del alérgeno, lo cual provoca que el individuo genere anticuerpos IgE los cuales combaten al alérgeno (el sistema inmune considera que esta sustancia es potencialmente dañina), mediante la generación de anticuerpos de IgE que se unen a receptores de células del sistema inmune (eosinófilos, basófilos y mastocitos). La segunda fase de respuesta se produce cuando el individuo entra de nuevo en contacto con el alérgeno. Durante el segundo contacto, los antígenos del alérgeno interactúan con anticuerpos específicos de IgE que se encuentran sobre la superficie de células del sistema inmune, desencadenando la degranulación de estas células (mastocitos) y la consecuente liberación de mediadores químicos de la alergia tales como, por ejemplo, histamina, los cuales son responsable de los síntomas típicos de la alergia (tos, estornudos, picor, enrojecimiento de ojos, urticaria, inflamación, etc.).

4 0
2 years ago
How are conduction and indoction alike and how are they different
PolarNik [594]

Both conduction and induction involve a movement of electrons. Conduction is the transfer of electrons from a charged object to another object by direct contact. Induction does not involve direct contact. Instead, induction is the movement of electrons from one part of an object to another as a result of the electric field of the second object.  What is the difference between conductive and non-conductive?  Conductive materials are good conductors of heat or electricity. Nonconductive materials are not good conductors of heat or electricity. I hope this helps! :)

3 0
3 years ago
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patriot [66]

Answer:

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