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marusya05 [52]
3 years ago
11

Past ice ages are believed to have been caused by _____.

Biology
2 answers:
MakcuM [25]3 years ago
7 0
I think your answer is A 
arlik [135]3 years ago
7 0

Answer: The correct answer for the blank is- A-solar output changes and Milankovitch cycles.

An ice age can be described as a prolonged reduction in the temperature of the atmosphere and Earth's surface, which leads to the expansion of polar ice sheets.

Fluctuations in the amount of incident rays of sunlight ( incoming sunlight) is considered as the most likely reason behind changes in Earth's climate.

In other words, alteration in the duration and the intensity of heat from the sun is the cause of glacial cycles.

The Milankovich cycles occur primarily due to changes in the shape of the Earth's orbit around the sun, which relates the tilted axis of Earth.

Thus, option A) is the right answer.

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<u>Benefits</u>:

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4 0
2 years ago
Morning! I just need some help with this question! Ex. If it is A and it is mitosis then you would put A-Mitosis
polet [3.4K]

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Closed extranuclear pleuromitosis occurs in Trichomonadida and Dinoflagellata.

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Semiopen pleuromitosis is typical of most Apicomplexa.

Semiopen orthomitosis occurs with different variants in some amoebae ( Lobosa) and some green flagellates (e.g., Raphidophyta or Volvox ).

5 0
2 years ago
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