how did inhabitants in west africa find iron
What was the biggest difference between the Earth's second atmosphere and third (present) atmosphere?
Carbon dioxide from volcanic activity became a major part of the atmosphere.
Oxygen from plant photosynthesis became a significant part of Earth's atmosphere.
Oxygen from water vapor in the atmosphere became a large part of Earth's atmosphere.
High percentages of Carbon dioxide caused a sustained warming cycle 500 million years ago.
Answer:
Carbon dioxide from volcanic activity became a major part of the atmosphere.
Explanation:
The biggest difference between the Earth's second atmosphere and third (present) atmosphere is;
Carbon dioxide from volcanic activity became a major part of the atmosphere.According to this question, we are to discuss the difference between the Earth's second atmosphere and third (present) atmosphere.
As a result of this we can see that Carbon dioxide which is as results of volcanic activity serves as a crucial part that make up atmosphere.
Therefore, Carbon dioxide from volcanic activity became a major part of the atmosphere serve as the difference between Earth's second atmosphere and third atmosphere.
Learn more about Atmosphere at;
https://brainly.com/question/25526298
What do west and east Africa have in common
Atmospheric pressure is about 100 kPa at sea level. What would the air pressure be at 10,000 meters above sea level?
about 30 kPa
0 kPa
about 150 kPa
the same, 100 kPa
Answer:
about 30 kPa
Explanation:
Analyze the chart below and answer the question that follows.
A flowchart titled Constitutional Monarchy. A box labeled Head of State has entry 1. Under Head of State is Courts. A box labeled Head of Government has entry 2. Under the Head of Government is the Cabinet and Box 3. Under Box 3 is House of Lords and Box 4.
Which of the following terms belongs in the box labeled with the number 2 on the chart above?
A.
Monarch
B.
Parliament
C.
Prime minister
D.
House of Commons
Please select the best answer from the choices provided
A
B
C
D
Answer:
C
Explanation:
i took the practice
Match the groups of minerals with their descriptions.
Answer:
1. d
2. b
3. a
4. c
Match the groups of minerals with their descriptions.
Answer:
1. d
2. b
3. a
4. c
Geologists apply various methods to study the layers of the Earth. Which of the following is a method used to study the Earth’s layers?
A. Scientists use seismic waves to map the atmospheric conditions above Earth's crust.
B. Scientists map seismic waves to determine the atomic structure of materials that lie beneath Earth's surface.
C. Scientists measure vibrations of Earth's surface using a compass (an instrument that is sensitive to Earth's magnetic field).
D. Scientists measure the time it takes for seismic waves to reach a seismograph (an instrument that measures seismic waves).
Answer:
I believe it is A
(sorry if I am wrong, please give one star if wrong)
Analyze the map below and answer the question that follows.
A political map of Southeast Asia. Countries are labeled 1, 2, 3, 4, 5, and 6. 1 is between Thailand and India. 2 is between Myanmar and Cambodia. 3 is along the coast between China and Cambodia. 4 are islands off the coast of Vietnam above Indonesia. 5 is a series of islands south of the Philippines and Malaysia. 6 is marked with a star between the coasts of Indonesia and mainland Malaysia.
Image by Historicair
Which of the following countries is identified correctly on the map above?
A.
Thailand is country number 1.
B.
Burma (Myanmar) is country number 2.
C.
Vietnam is country number 3.
D.
Indonesia is country number 4.
Please select the best answer from the choices provided
A
B
C
D
Answer:
i think it is D
Answer:
A
Explanation:
I got it on edge.
Terry is creating a presentation about seafloor spreading. Which of the following statements is a fact he should include in his presentation?
A. Seafloor spreading occurs within subduction zones at a consistent rate.
B. Seafloor spreading is a result of convection currents in Earth’s inner core.
C. Seafloor spreading can occur at both divergent and convergent plate boundaries.
D. Seafloor spreading occurs along mid-oceanic ridges resulting in the formation of new crust.
Answer:
D. Seafloor spreading occurs along mid-oceanic ridges resulting in the formation of new crust.
Explanation:
Hope this helps! :)
Atmospheric pressure is about 100 kPa at sea level. What would the air pressure be at 10,000 meters above sea level?
Answer:
The air pressure at altitude 10000 m can be calculated as. p = 101325 (1 - 2.25577 10-5 (10000 m))5.25588. = 26436 Pa. = 26.4 kPa. vacuum.
Which of the following does not explain a way that scientists have learned about the interior of Earth?
They study the gravitational and magnetic fields of Earth.
They study the waves produced from earthquakes.
They observe how sound waves pass through the layers of Earth.
They observe the reflection of electromagnetic waves from Earth.
Answer:
THEY OBSERVE THE REFLECTION OF ELECTROMAGNETIC WAVES FROM EARTHExplanation:
I HOPE THAT THIS ANSWER HELPS YOUAnswer:
The last one
Explanation:
Please answer this. Thank you.
Answer:
hope this helps
Explanation:
What are some social, political, and economic issues we are facing today?
Atmospheric pressure is about 100 kPa at sea level. What would the air pressure be at 10,000 meters above sea level?
about 30 kPa
0 kPa
about 150 kPa
the same, 100 kPa
Answer:
about 30 kPa
Explanation:
what were 3 types of people that live in ancient India. This is for Social Science and I really need help.