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masya89 [10]
3 years ago
6

Explain how a small amount of chlorofluorocarbons can destroy a large amount of ozone.

Biology
2 answers:
lbvjy [14]3 years ago
4 0
Chlorofluorocarbons are more commonly known as CFCs. CFCs were once used as refrigerants, <span>propellants (in aerosol applications), and solvents. Once CFCs enter </span>the atmosphere, they slowly<span> rise to the stratosphere. Here, ultraviolet radiation causes the break up of CFCs into their individual chlorine atoms. The chlorine atoms cause the catalytic destruction of</span> ozone<span>. </span>
baherus [9]3 years ago
4 0

The chlorine in chlorofluorocarbons is broken from the molecule by ultraviolet radiation. The free chlorine then combines with an oxygen atom from ozone, leaving an oxygen molecule and forming chlorine monoxide. Free molecules of oxygen can displace the chlorine in chlorine monoxide, leaving chlorine free to break up another molecule of ozone. One chlorine atom can destroy up to 100,000 ozone molecules.

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Humans and other animals regulate cell growth and cell division. In humans which of these types of cells generally do NOT divide
nevsk [136]

Answer:

skin cells and muscles divide

Explanation: common sense cse we grow

6 0
3 years ago
In which atmospheric layer do humans live most of their lives?
OverLord2011 [107]
Breathing source oxygen elements easy to live human
5 0
2 years ago
Which type of rock was the first to exist on the planet?
timurjin [86]

Answer:

B- sedimentary

Explanation:

4 0
2 years ago
Que tipo de aislamiento reproductivo exhibe la mula?
bulgar [2K]

Answer:

<em>Aislamiento postreproductivo: Esterilidad del híbrido</em>

Explanation:

El concepto biológico de <u>especie</u>, en su definición, destaca que los ejemplares de una especie no pueden entrecruzarse con ejemplares de otra especie distinta, o bien, en caso de hacerlo, no hay éxito reproductivo.

Existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. Se trata de caracteres biológicos propios de cada especie que previenen la reproducción con otras especies.

Estos mecanismos de aislamiento reproductivo pueden ser precigóticos o postcigóticos.  

  1. Pre-copulatorios o pre-cigóticos:
  • Ecológico o por aislamiento de hábitat;
  • Estacional o temporal;
  • Sexual o etológico;
  • Mecánico;
  • Por incompatibilidad de gametas.  

   2. Post-copulatorios o cigóticos:

  • Inviabilidad del híbrido;
  • Esterilidad del híbrido;
  • Híbrido con viabilidad o fertilidad disminuido;
  • Interacciones citoplasmáticas.

La mula es producto de la cruza entre dos especies distintas: una yegua (<em>Equus ferus caballus</em>) y un burro (<em>Equus africanus asinus</em>). Es un ejemplo de la accion de mecanismo poscigótico, en el cual se forma un híbrido viable esteril. Este ejemplar puede nacer crecer y sobrevivir, pero que no pueden producir gametas funcionales, por lo cual no pueden reproducirse.        

4 0
2 years ago
What would you say is the most significant result of the technology revolution in archaeology ?
Igoryamba

Answer:

Improvement of preservation techniques.

Explanation:

The most significant result of the technology revolution in archaeology is the improvement of preservation techniques used for archaeological sites. Modern technology also allows researchers to go to a site in order to find out  the answers of additional questions. Modern archaeologists are fighting climate change, discovering how cultures evolved with the passage of time, and using technology to better understand human evolution.

8 0
3 years ago
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