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UNO [17]
2 years ago
14

Scientists can determine if oxygen existed in Earth's Archean atmosphere by

History
2 answers:
Taya2010 [7]2 years ago
5 0
Scientists can determine if oxygen existed in Earth’s Archean atmosphere by looking for oxidized iron in rock.  In the beginning, there was only a little to no oxygen in the atmosphere. The oxygen that are being produced by cyanobacteria is only enough for the weathering process. There will only enough oxygen that shall remain in the atmosphere when the rocks at the surface are properly and adequately oxidized.  However, as time goes by, evidences said that the amount of oxygen in the Archean atmosphere is actually increasing in a slow steady pace. 
butalik [34]2 years ago
5 0

Correct answer would  be B

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I need a time line of Muslim history from BCE to CE​
Karolina [17]

Answer:

570 CE

Muhammad is born in Mecca.

610 CE

Muhammad receives his first revelation on Mount Hira.

622 CE

Muhammad undertakes the Hegira (Hijra), the migration from Mecca to Medina, establishing the start of the Islamic calendar.

624 CE

Battle of Badr: Muhammad's forces win, resulting in a turning point for Islam against the ruling Quraysh tribe.

625 CE

Battle of Uhud: Quraysh tribe defeats the Muslims.

627 CE

Battle of the Trench: Quraysh troops attempt to siege Medina (then called Yathrib), but lose to the Muslim force.

627 CE

Siege of Bani Qurayzah: Muslims capture the Jewish stronghold.

628 CE

Treaty of Hudaybiyyah: A peace agreement is signed between Muhammad's Muslims and the people of Mecca.

628 CE

Conquest of Khaybar oasis: Jews barricade themselves in a fort at Khaybar oasis and are allowed to remain living there if they pay the Muslims one third of their produce.

629 CE

First Pilgrimage ("lesser" pilgrimage or "umrah") made by Muhammad and his Muslims to Mecca after migrating to Medina.

629 CE

Battle of Mu'tah: Muslims attempt to capture the village east of the Jordan River from the Byzantine Empire to show their expanding dominance, resulting in a Muslim defeat.

630 CE

Non-violent conquest of Mecca: The Quraysh realize that the Muslims now greatly outnumber them and allow the Muslims to capture their city, Mecca, and rule it as they please.

630 CE

Battle of Hunayn: Ending in a decisive victory for the Muslims over the Bedouin tribe of Hawazin.

630 CE

Attempted Siege of Ta'if: Muhammad's forces are initially unable to siege Ta'if and convert its people to Islam.

632 CE

"Farewell Hajj Pilgrimage": This is the only Hajj pilgrimage in which Muhammad participates.

632 CE

Muhammad dies in Medina, not clearly naming a successor to lead the Muslim people.

632 CE - 634 CE

Abu Bakr becomes the first caliph (successor to Muhammad) of the Rashidun Caliphate.

634 CE - 644 CE

Umar ibn al-Khattab succeeds Abu Bakr, becoming the second caliph of the Rashidun Caliphate.

637 CE

Muslim Conquest of Mesopotamia.

637 CE

Muslim invasion of the Levant. The Byzantines are driven out.

644 CE - 656 CE

Uthman ibn 'Affan succeeds Umar to become the third caliph of the Rashidun Caliphate.

c. 650 CE

Uthman orders the establishment of one "true" Quran while destroying the others.

656 CE - 661 CE

Ali ibn Abi Talib succeeds Uthman to become the fourth and final caliph of the Rashidun Caliphate.

Mar 670 CE

Hasan ibn Ali, Shia Islam's second imam (his father, Ali ibn Abi Talib, being the first imam), is poisoned to death.

Oct 680 CE

Husayn ibn Ali, Shia Islam's third imam, is beheaded by Yazid I's force at the Battle of Karbala in present-day Iraq.

750 CE

Fall of the Umayyad Caliphate.

750 CE

Start of the Abbasid Caliphate.

754 CE - 775 CE

Reign of Al-Mansur over the Abbasid Caliphate.

756 CE

Abd al-Rahman I establishes the Emirate of Cordoba.

756 CE - 788 CE

Reign of Abd al-Rahman I over the Emirate of Cordoba

7 0
3 years ago
Which statement describes the role of women in ancient Rome?
Strike441 [17]
They could run the household
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3 years ago
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3 years ago
Which of the following were effects of the growth of agriculture in the Midwest
dlinn [17]

Answer:

Heat

Explanation:

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6 0
3 years ago
While cleaning your grandmother's attic, you find a photograph of voters on Election Day in 1925. What group of people would hav
ValentinkaMS [17]
I don't think it was women because woman were not allowed to vote until 1920 and the question is asking for 1925. white man were allowed to vote their whole life. African american males were not allowed to vote until the 1870s i think so we can cross all three of those out and we are left with 18 year old's. So I think the answer is C 18 year old's.

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