Place the following events in Earth’s history in order. Which happened second? a. Eukaryotes arose. b. O 2 gas accumulated in the atmosphere. c. First multicellular organisms arose. d. Prokaryotes arose.

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Answer 1

Textbook Question

Chapter 15, Problem 1MCQ

Place the following events in Earth’s history in order. Which happened second?

a. Eukaryotes arose.

b. O₂ gas accumulated in the atmosphere.

c. First multicellular organisms arose.

d. Prokaryotes arose.

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

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Answer 2

Textbook Question

Chapter 15, Problem 1MCQ

Place the following events in Earth’s history in order. Which happened second?

a. Eukaryotes arose.

b. O₂ gas accumulated in the atmosphere.

c. First multicellular organisms arose.

d. Prokaryotes arose.

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 15, Problem 1MCQ

Place the following events in Earth’s history in order. Which happened second?

a. Eukaryotes arose.

b. O₂ gas accumulated in the atmosphere.

c. First multicellular organisms arose.

d. Prokaryotes arose.

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 15, Problem 1MCQ

Place the following events in Earth’s history in order. Which happened second?

a. Eukaryotes arose.

b. O₂ gas accumulated in the atmosphere.

c. First multicellular organisms arose.

d. Prokaryotes arose.

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Accumulation of oxygen in the atmosphere is the second event to occur in the history of Earth.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The earth and other planets of the solar system formed around 4.6 billion years ago. The earth was a red-hot ball at that time and it slowly cooled down to form the crust. The earth cooled down further to allow the origin of first life form on earth. The changes in atmosphere of earth such as accumulation of oxygen took place gradually to allow origin of other life forms on earth.

Answer 12

Answer to Problem 1MCQ

Correct answer:

Accumulation of oxygen gas in the atmosphere is the second event to occur in the history of Earth. Therefore, option (b) is correct.

Answer 13

Explanation of Solution

Reason for the correct statement:

Prokaryotes arose around $4.2−3.8$ billion years ago in the Precambrian supereon period. On the other hand, the accumulation of oxygen in the atmosphere began around 2.5 billion years ago, much later than origin of prokaryotes. The eukaryotes arose around 1.5 billion year ago followed by the evolution of multicellularity.

Option (b) is given as “ $O2$ gas accumulated in the atmosphere”.

As, “the accumulation of oxygen in the atmosphere constitute the second event to occur in Earth’s history in order”, is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a), is given as “Eukaryotes arose”.

Eukaryotes arose around 1.5 billion years ago and this event is the third event in Earth’s history in order. Hence, it is a wrong answer.

Option (c), is given as “First multicellular organisms arose”.

First multicellular organism originated around 1.2 billion years ago and this event is the fourth event in Earth’s history in order. Hence, it is a wrong answer.

Option (d), is given as “Prokaryotes arose”.

The prokaryotes arose around $4.2−3.8$ billion years ago and this event is the first event in the Earth’s history in order. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.