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ELEN [110]
3 years ago
9

What is your familiarity with the terms infrared and ultraviolet? What uses and/or risks do they pose to humans?

Biology
1 answer:
shtirl [24]3 years ago
5 0
Infrared: (of electromagnetic radiation) having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves.Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects.

Ultraviolet: (of electromagnetic radiation) having a wavelength shorter than that <span>of the violet end of the visible spectrum but longer than that of X-rays.</span>
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Which of these best defines “environmental science”?
blsea [12.9K]

Answer:

A or/and D

Explanation:

Environmental science is the study of how organisms interact with their environment so it can be either a or d. I would say a combination of both.

4 0
3 years ago
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If Mr. and Mrs. Johnson had four children together, what color of hair would the children likely have?
Ksju [112]
If the parents have black hair then all the kids would have black hair (a)

if one parent has blonde hair and the other has black hair then 2 kids would be blonde and 2 would have black hair (d)

if the parents have blonde hair then the kids would have blonde hair (c)
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2 years ago
HELP ME ASAP THIS IS THE TEST!!!!!!!!!!!!!!!!!!!!1
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oxygen i think

Explanation:

3 0
3 years ago
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Si se aparean especies diferentes como por ejemplo el cruce entre caballos y burros; podemos afirmar que si llegan a tener desce
White raven [17]

Answer:

El híbrido va a ser esteril.

Explanation:

En la cruza entre dos especies distintas, cuando ocurre, existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. Es decir que no habrá exito reproductivo de estas cruzas. 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;
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La mula es producto de la cruza entre dos especies distintas: una yegua (Equus ferus caballus) y un burro (Equus africanus asinus). 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 puede producir gametas funcionales, por lo cual no puede reproducirse.  

7 0
2 years ago
Why do scientists conduct experiments?
Murljashka [212]
C.to test hypothesis
4 0
3 years ago
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