Question 12 of 20
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12. When did oxygen levels start to decline from 35 percent down to today's levels?
O A. During the Permian eriod
> O B. Before the Siluran period
C. After the Triassic period
Oo. Ater the Caroonferous period
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Answer 1

Answer:

After the Carboniferous period

Explanation:

The oxygen levels start to decline from 35 percent down to today's levels "After the Carboniferous period." This is the period of about 298 million years ago after 60 million years of Carboniferous period which began around 358 million years ago. It was characterized by dense and swampy forests, which led to large deposits of peat.


Related Questions

How does anasi influence children ?

Answers

Anansi stories are often funny and teach us lessons about the consequences of making bad choices and that it is better to be smart than to be strong. Anansi, the trickster from the folktales of the Ashanti of West Africa, takes the shape of a spider who goes to the sky god to buy his stories to share with the world.

Summarize the main principles of the declaration of independence

Answers

Answer:

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.

Explanation:

why do you think early American read so much work produced in England?

Answers

Answer:

The basic assumption for "Early Americans" or at least "Early United Statians", is that, quite frankly, their ancestors came from Great Britain, whether they were fleeing religious persecution, or that they were inmates that were sent west to help relieve overflowing prison system, or even prospectors and adventure seekers. They would establish settlements such as Roanoke and Jamestowns, and with new incomers as well as a growing population, would slowly expand. Remember, these settlers were primarily from England, meaning that English would be their primary language. As such, any works they would read would be in English, and that left mainly works produced in America by British colonists, or else it would simply come from England. Unless they understood a different language, those would be the two places of origin for the information and reading materials that they would acquire.

Please select the word from the list that best fits the definition
enforced laws and collected taxes in Sparta

satraps
philosophers
ephors
oligarchy
20
Pericles
Dorians
Spartans
polis
agora
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Answer:

ephors ephors ephors ephors ephors

This map shows the spread of Christianity by 325 and 500.

Map of the spread of Christianity. A key shows Christianity in 325 in dark orange, and Christianity in 500 in light orange. Britain, Italy, France, Anatolia, Judea, Egypt, Russia, Poland, and Greece are labeled. Constantinople and Rome are labeled.

By 380, the Roman Catholic Church was the official church of the Roman Empire. By 500, parts of Europe, Asia, and Africa were Christian. Based on this map, which modern-day country was the first to embrace Christianity?

Britain
Russia
Poland
France

Answers

D is the correct answer for this question.

Based on this map France was the first moderns day country to embrace Christianity among Britain, Russia and Poland. The Prince of France always mantained close relations with the Pope, and France was at one time considered the Church's eldest daughter. Religion has been at the forefront of France many conflicts, namely The Hundred Years Old War against Britain and Protestantism.

Hope this helps MARK AS BRAILY PLSSS

Answer:

France

Explanation: Just did it

How has 40% of the land being covered by tropical rainforests
affected the way humans interact with their environment in South America

Answers

Answer:

Explanation:

We are losing Earth's greatest biological treasures just as we are beginning to appreciate their true value. Rainforests once covered 14% of the earth's land surface; now they cover a mere 6% and experts estimate that the last remaining rainforests could be consumed in less than 40 years.

One and one-half acres of rainforest are lost every second with tragic consequences for both developing and industrial countries.

Rainforests are being destroyed because the value of rainforest land is perceived as only the value of its timber by short-sighted governments, multi-national logging companies, and land owners.

Nearly half of the world's species of plants, animals and microorganisms will be destroyed or severely threatened over the next quarter century due to rainforest deforestation.

Experts estimates that we are losing 137 plant, animal and insect species every single day due to rainforest deforestation. That equates to 50,000 species a year. As the rainforest species disappear, so do many possible cures for life-threatening diseases. Currently, 121 prescription drugs sold worldwide come from plant-derived sources. While 25% of Western pharmaceuticals are derived from rainforest ingredients, less that 1% of these tropical trees and plants have been tested by scientists.

Most rainforests are cleared by chainsaws, bulldozers and fires for its timber value and then are followed by farming and ranching operations, even by world giants like Mitsubishi Corporation, Georgia Pacific, Texaco and Unocal.

There were an estimated ten million Indians living in the Amazonian Rainforest five centuries ago. Today there are less than 200,000.

In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900's. With them have gone centuries of accumulated knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.

Most medicine men and shamans remaining in the Rainforests today are 70 years old or more. Each time a rainforest medicine man dies, it is as if a library has burned down.

When a medicine man dies without passing his arts on to the next generation, the tribe and the world loses thousands of years of irreplaceable knowledge about medicinal plants.

Select the correct answer.
Civil rights and equality have played a major role in American history. People have been fighting for rights based on gender, ethnicity, race, and
other attributes for centuries. In what way did the Quakers participate in the early fight for human rights?

A. They established fair labor laws and mandated fair wages to all levels of workers.
B. They created a set of laws that prohibited any form of discrimination.
C. They allowed Catholics to seek refuge among their communities.
D. They did not believe in the institution of slavery based on moral principles

Answers

Un oil aono apsis bah

Chủ nghĩa xã hội, giai đoạn đầu của hình thái kinh tế - xã hội cộng sản chủ nghĩa

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Can you please Tell the question in English please.

Q: Which of the following BEST describes Reconstruction? Select one: O a. It was a short period of time when African Americans enjoyed new rights. These rights were quickly taken away. O b. Reconstruction was the time period leading up to the Civil Wa O c. It was a period of cooperation between Republicans and Democrats. O d. It was a period of cooperation between the Northern and Southern states.​

Answers

Answer:

a. It was a short period of time when African Americans enjoyed new rights; these rights were quickly taken away.

Option A: It was a short period of time when African Americans enjoyed new rights. These rights were quickly taken away.

What is Reconstruction ?

Reconstruction refers to the period following the Civil War of rebuilding the United States. The Reconstruction era was the period after the American Civil War from 1865 to 1877, during which the United States grappled with the challenges of reintegrating into the Union the states that had seceded and determining the legal status of African Americans.

Civil war and Reconstruction

As a result of the Union victory in the Civil War and the ratification of the Thirteenth Amendment to the Constitution (1865), nearly four million slaves were freed. The Fourteenth Amendment (1868) granted African Americans citizenship, and the Fifteenth Amendment (1870) guaranteed their right to vote.

Thus, Reconstruction is best described as  a short period of time when African Americans enjoyed new rights. These rights were quickly taken away.

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28.
Who is known as the father of modern China?

Ci Xi
Hong Xiuquan
Confucius
Sun Yixian

Answers

Answer:

the father of modern china is Sun Yat-sen

It is Sun yet-sen. not mentioned tho.

Each state sends a different number of representatives to the House of Representatives depending on the population of the state A) true B) False

I feel like it’s b but need a second opinion

Answers

This is actually true!

The number of members in representing each state should be proportionate to the populations of their respective states.

Hope this helps!

what was the War of 1812​

Answers

Answer:

The war of 1812 was fought between the United States (and its allies) against Great Britain (with its colonies and allies).  It was fought so the United States could secure commercial rights, the trade restrictions, the desire to expand territory, and uphold national honor.  It lasted from 1812 to 1815.

Explanation:

Select all that apply. Which of the following are needs?
Video games
A piece of clothing you need for a job
An expensive pair of shoes
Food for dinner food from an expensive restaurant
Cell phone

If you are looking to save money for a ticket to a concert in a few months, where is the best place to save your money?

Savings account at a bank
Retirement account
At home, in a piggy bank
Investment account

Select all that apply.
Which item(s) can be justified for purchasing with a credit card?
Bill for a home repair
Expensive new pair of shoes
New washing machine to replace a broken one
Spontaneous vacation

Answers

Answer:

A piece of clothing you need for a job

Savings account at a bank

Bill for a home repair

New washing machine to replace a broken one

Answer:

1) B, D

2) C

3) A, D

Explanation:

Hope it helped!

24
An experiment was carried out to investigate growth response in a maize seedling as
shown in the diagram below.
Wh
Sunlight
WW
At the beginning
After 5 days
What type of response was being investigated above?
Biology/5090/1/2020​

Answers

Answer:

Radicle moves downward towards soil while on the other hand, plumule moves upward towards sunlight.

Explanation:

At the beginning of emergence, radicle and plumule comes out from the seedling in which radicle moves downward towards soil while on the other hand, plumule moves upward towards sunlight. During this movement, the seedling use stored food present in the seed until it started preparing food their own. After the seedlings comes out of the soil it started to make their own food through the process of photosynthesis.

Answer:

Radicle moves downward towards soil while on the other hand, plumule moves upward towards sunlight.

Explanation:

What date is it today?

Answers

Answer:

12 Agust 2021( Thursday )

Explanation:

Which of the below is not a characteristic of the agricultural revolution?

A.) Populations began to decrease
B.) Man learned to farm and produce enough food to support communities
C.) Communities became larger
D.) Societies were no longer nomadic and stayed in one place

Answers

Answer:

D.) Societies were no longer nomadic and stayed in one place

Populations began to decrease is not a characteristic of the agricultural revolution.

The first agricultural revolution is a concept to refer to the revolution in which the first human communities:

Abandoned nomadism Settled in a place to practice agricultureBuild buildings and establish towns that would later be civilizations.

Agriculture allowed the first communities to have enough food for all the settlers. In addition, the first agricultural revolution allowed the growth of the population because when the communities were nomads they were exposed to dangers such as:

Harsh weather conditionsWild animalsFood shortagesConflict with other communities.

While settling in a place they had a greater life expectancy.

According to the above, options B, C and D are characteristic of the agricultural revolution, while A is not a characteristic because the population grew during that time.

Learn more in: https://brainly.com/question/1953715

Which of the following is true of the treaty of Versailles ?
1. It recognized the Soviet Union as an equal partner among the allies
2. It adopted few of Wilson’s fourteen points
3. It’s placed equal blame for the war along the central powers
4. It’s allowed Germany to return to its prewar status

Answers

Answer:

4. It’s allowed Germany to return to its prewar status

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Mention the name of the first radio station in Ghana.

Answers

Uniq FM I asked Siri

PLEASE HELP! D:

Which of the following is an example of the idea of "separation of powers" in the American constitutional system?

A - Each state elects representatives and senators to Congress.

B - The process for creating laws involves Congress and the president.

C - The military is allowed to make decisions without the president's approval.

D - Congress is allowed to pass laws without approval of the president.

Answers

Answer:

B.

Explanation:

Answer: The process for creating laws involves Congress and the president.

what was true mycenaen civilization

Answers

Answer:

The Mycenaean civilization was located on the Greek mainland, mostly on the Peloponnese, the southern peninsula of Greece. The Mycenaeans are the first Greeks, in other words, they were the first people to speak the Greek language.

Explanation:

l hope this is helpful to you

Why were some achievements of progressive reformers short-lived?

Most people did not support the new laws.

The Supreme Court struck down many new laws.

State and federal legislatures would only pass new laws.

Answers

Answer:

Explanation:

The Supreme Court struck down many new laws.

Answer:

(B) the supreme court struck down on many new laws

Explanation: Edg 2021

which statement BEST completes the diagram:
colonists bring diseases like smallpox in North America, Colonists believe land can be owned by individual people, American Indian peoples suffer greatly.
A- colonists refuse to teach American Indians how to farm
B-colonists become the leaders of american indian religious groups
C- colonists introduce steel weapons and guns to american indians
D- colonists force american indians into slavery on plantations

Answers

Answer:

C- colonists introduce steel weapons and guns to american indians

Explanation:

I agree

Am upsearge of violence in the 1990s was a desperate attempt by right wing political organisation to serial the process of negotiation​

Answers

Answer:

INTRODUCTION

1. The Commission had considerable success in uncovering violations that took place before 1990. This was not true of the 1990s period. Information before the Commission shows that the nature and pattern of political conflict in this later period changed considerably, particularly in its apparent anonymity. A comparatively smaller number of amnesty applications were received for this period. The investigation and research units of the Commission were also faced with some difficulty in dealing with the events of the more recent past.

2. Two factors dominated the period 1990�94. The first was the process of negotiations aimed at democratic constitutional dispensation. The second was a dramatic escalation in levels of violence in the country, with a consequent increase in the number of gross violations of human rights.

3. The period opened with the public announcement of major political reforms by President FW de Klerk on 2 February 1990 � including the unbanning of the ANC, PAC, SACP and fifty-eight other organisations; the release of political prisoners and provision for all exiles to return home. Mr Nelson Mandela was released on 11 February 1990. The other goals were achieved through a series of bilateral negotiations between the government and the ANC, resulting in the Groote Schuur and Pretoria minutes of May and August 1990 respectively. The latter minute was accompanied by the ANC's announcement that it had suspended its armed struggle.

4. A long period of 'talks about talks' followed � primarily between the government, the ANC and Inkatha � culminating in the December 1991 launch of the Convention for a Democratic South Africa (CODESA). CODESA, which involved twenty different political parties and organisations, collapsed in disagreement over issues of majority rule and regional powers. In May 1992, talks resumed with CODESA II. However, barely a month later, the ANC withdrew in the wake of the Boipatong massacre of 17 June 1992 and embarked on a campaign against the remaining homeland governments. Talks resumed five months later, after the signing by the ANC, PAC and the government of a Record of Understanding.

5. The Record of Understanding marked a shift in the National Party (NP) government's negotiating strategy. It abandoned its de facto alliance with the IFP, through which it had hoped to secure enough electoral support to force a power-sharing arrangement with the ANC. Instead, the ANC and the government now co-operated closely while the IFP aligned itself with a coalition of bantustan governments and elements of the white right wing. This latter grouping ultimately coalesced into the Concerned South Africans Group (COSAG) which, in July 1993, walked out of the talks and formed the Freedom Alliance. This development saw a further escalation in the level of violence. With the IFP's chief negotiator threatening a civil war if the elections went ahead without the IFP, deaths from political violence in July and August 1993 soared to 605 and 705 respectively, compared to 267 in June 1993.

What happened in American factories during world war 2

Answers

Answer: American factories were retooled to produce goods to support the war effort and almost overnight the unemployment rate dropped to around 10%. As more men were sent away to fight, women were hired to take over their positions on the assembly lines.

Answer:

Factories were converted to the production of military items such as tanks, rifles, ammunition, airplanes and ships

American factories were retooled to produce goods to support the war,

Indian historians believe that chalukyas were _____

Answers

Answer:

don't know don't know don't know don't know

Answer:
Indian historians believe that the Chalukyas were natives of the present-day Karnataka region

Explanation:
Chalukyas were a dynasty that ruled southern and central parts of India, from the 6th to the 12th centuries. The Chalukyas during this period were of three separate, but related dynasties.

Hope this helps!

please help me with this:)

Answers

Answer: b

Explanation:

15 points pls help

what is the importance of a family tradition

Answers

Answer:

1.It helps the children manage the changes in the year and gives them something to look forward .

2.It enhances family and personal well-being and can also add to the family identity

what type of representation was used in fiji before the 1970 independence​

Answers

Answer:

the Dominion of Fiji

Explanation:

Fiji was a Crown colony until 1970, when it gained independence as the Dominion of Fiji. A republic was declared in 1987, following a series of coups d'état.

Many people said at the time that King was giving up his civil rights success by
speaking out against the war. Why might they think that?

Answers

Answer:

I don't know about this but in the islamic ruling for example ottoman empire

Explanation:

in ottoman empire they have elections to choose the next king / sultan who will going to rule.

How has pollution affected marine animals and puget sound over the years

Answers

Answer:

a) It has poisoned and killed them

Explanation:

Puget Sound, located in the northwestern coast of state of Washington in the United States of America, is a body of water that used to harbor thousands of marine wildlife species.

However, through constant monitoring, scientists have shown that hundreds to thousands of marine wildlife have disappeared due to pollution, especially single-use plastic bags, which have caused the death of thousands of whales and seabirds, and the presence of toxic chemicals and eutrophication, which have caused the reduction of oxygen levels in the water, leading to the death of many fish and marine mammals.

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