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Vsevolod [243]
4 years ago
11

In what time period did archaea first formed?

Biology
1 answer:
zmey [24]4 years ago
3 0
3.5 billion yrs ago
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Which species concept is based on the degree of reproductive isolation between populations of species?
zmey [24]

Answer:

biological species concept.

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3 years ago
From the list of x-rays, infrared radiation, ocean waves, sound waves and light waves. Which of these are mechanical waves? help
diamong [38]
The answer is C) ocean sound and light waves
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3 years ago
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Desde captar el estimulo hasta efectuar una respuesta, la secuencia que sigue en el impulso nervioso es?
Elan Coil [88]

Answer:

creación de un potencial de acción (despolarización), redistribución de iones a través del soma y finalmente repolarización (estado de reposo)

Explanation:

Las neuronas son células nerviosas capaces de transmitir impulsos en forma de corriente eléctrica. Una neurona está compuesta por dendritas, el soma o cuerpo celular y el axón. Durante la transmisión del impulso nervioso, el estímulo es en primer lugar recibido por las dendritas, recorre el soma y termina en el axón. El impulso nervioso se transmite a través de la neurona mediante un proceso de despolarización. Primero, se produce un aumento de la carga eléctrica en el interior de la membrana neuronal debido al aumento de iones de sodio en el interior celular. A continuación, se produce la redistribución de iones dentro del soma, con lo cual la señal se va transmitiendo a lo largo de la neurona. Finalmente, cuando el impulso ha terminado de recorrer el axón, se produce la repolarización o estado de reposo, donde se produce el restablecimiento de las concentraciones iniciales de iones y la neurona vuelve a su estado inicial.

7 0
3 years ago
Which characteristics is found in the whale but no in the phytoplankton
PSYCHO15rus [73]
The answer is a heterotropic! please rate me brainliest
3 0
3 years ago
Give an example of carbon atoms getting into the geosphere and one for the atmosphere:
LiRa [457]

Answer:1) Carbon moves from atmosphere to hydrosphere and biosphere in the process of photosynthesis and to lithosphere by deposition of dead bodies while from hydrosphere and biosphere, carbon can be move in the process of respiration by animals.

2) During respiration process which takes place in plants in which carbondioxide is released and by eating carbon containing food by animals. By decomposing the food, carbon is releases in the form of carbondioxide.

3) Carbon can be used by the marine plants in the process of photosynthesis and during the process of diffusion, carbon is also dissolve in water bodies.

4) When the plants and animals die, the carbon which is present inside their body is buried in the soil present at the bottom of the ocean and the shells and corels of some animals also contain carbon which is soon be the part of the lithosphere when they die.

5) After the decomposition of seashell, carbondioxide is produced because shells are made up of calcium carbonate.

Explanation:

4 0
3 years ago
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