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Anton [14]
3 years ago
8

explain why mesopotamia became a great place for civilization to grow ? what factors encouraged humans to settle and thrive i th

is part of the world?
Biology
1 answer:
N76 [4]3 years ago
6 0

Answer: The Tigris-Euphrates river system, where Mesopotamia started, was an area prone to frequent flooding. The flooding deposited valuable silt onto the land and enabled crops to be grown and harvested in surplus. This was the first time farmers had an excess of what they needed. The surrounding land was devoid of most other raw materials, such as wood, stone and metal. To get these materials, the early Mesopotamians resorted to trade. At these gathering hubs, people began constructing buildings, which formed the basis for the first cities to appear and helped civilizations continue to develop.

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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
3 years ago
When are conservation efforts most effective
lys-0071 [83]
Conservation would come out more effective when multiple groups cooperate to one common goal. Conservation is a big responsibility that can be made possible through the cooperation of many groups including the government, private organizations, and of course the people. 
3 0
4 years ago
How many chromosomes are found in one of the cells in your hand​
Snezhnost [94]
There are 46 chromosomes in every cell, except the cells in your genitals, such as in the ovaries and the sperms where there are 23
3 0
3 years ago
Read 2 more answers
It is known that many trees lose their leaves in response to decreasing day length. As a result, you think that Gingko trees may
Mamont248 [21]

Answer:

the loss of trees

Explanation:

7 0
4 years ago
Which one of the following is a DNA virus<br>A: Hin1 B: Hepatits C: HIV D: Herpes Complex​
igomit [66]

Answer:

Hepatitis definitely but Herpes is double stranded but I’m not sure.

Explanation:

6 0
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