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Margarita [4]
3 years ago
12

What happened at the end of the Archean?

Biology
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer:

The Archean Eon marked a time when Earth’s climate began to stabilize.

Earth cooled down from its molten state. It eventually could support oceans. Tectonic activity built continents.

In the Archean Eon, oxygen filled the atmosphere and most of the world’s iron ore was deposited.

Because the Earth’s conditions stabilized, eukaryotic and multicellular life could finally emerge in the Proterozoic Eon.

Explanation:

Fiesta28 [93]3 years ago
8 0

Answer:

Earth cooled down from its molten state.

Explanation:

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STatiana [176]

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the answer is c a graduated cylinder is used to measure liquids more efficently

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3 years ago
Closing mines has no economic impact on communities.
VladimirAG [237]

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False. Closing mines has economic impact on communities.

Explanation:

  • Economy is impacted by any hindrance in activities of production,distribution and consumption of any good or services.
  • So, closing mines too has great impact in economic sector of that certain area.
  • In many countries, mining has been the major source of economy and job opportunities for the community people.
  • Closing these mines results in downfall of economy and increased unemployment in that particular community.
5 0
3 years ago
What are hills and mountain​
Fiesta28 [93]

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A hill is a part of land that rises higher then everything surrounding it its like a little bump in the earth. Mountains have less steep and not as high but a hill will usually have and obvious summit which is its highest point

5 0
2 years ago
Read 2 more answers
Females of many insect species, including honeybee queens, can store gametes shed by their mating partners in _______. A. their
Anit [1.1K]

In the spermatheca, females of many insect species, including honeybee queens, can store gametes secreted by their sex partners.

<h3>What is Spermatheca ?</h3>

The female insect's spermatheca is an ectodermal structure that receives, stores, and releases sperm for egg fertilization. According to the species, spermathecae differ in size and shape.

  • They often come from the median oviduct, which is located close or on the genital chamber. A secretory duct called the ductus seminalis connects the spermathecal sac, also known as the receptaculum seminis, to the genital chamber, where the sperm are released.
  • The number of spermathecas varies among taxa, however the majority of insects only have one. Depending on the species of insect, the spermatheca has different morphologies. The spermatheca is composed of the spermathecal gland, duct, and reservoir. Both of these fluids feed the sperm. Both the spermathecal glands and the male accessory glands secrete substances that feed the sperm.

So lastly we can say that, t females of many insect species, including honeybee queens, can store gametes shed by their mating partners in - the spermatheca.

To know more about Spermatheca please click here : brainly.com/question/9748392

#SPJ4

3 0
1 year ago
Three ways water reaches the atmosphere
Eva8 [605]

Answer:

Water enters the atmosphere through evaporation, transpiration, excretion and sublimation: Transpiration is the loss of water from plants (via their leaves)

Explanation:

Hope this helps!!

3 0
3 years ago
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