« previous next »

Author Question: Which type of ore deposit originated before there was free oxygen in the atmosphere? a. banded iron ... (Read 100 times)

ishan

  • Hero Member
  • *****
  • Posts: 546
on: Jul 15, 2018

Which type of ore deposit originated before there was free oxygen in the atmosphere?
  a. banded iron formation
  b. manganese nodules
  c. colcanogenic copper
  d. gold placer deposits
  e. bauxite



Question 2

What kind of process produces banded iron formations?
  a. sedimentary
  b. hydrothermal
  c. igneous
  d. weathering
  e. metamorphic



Laurenleakan

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 15, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Temperature Profile of Earth’s Atmosphere Temperature Profile of Earth’s Atmosphere
Comparison of Type 1 and Type 2 Diabetes Mellitus Comparison of Type 1 and Type 2 Diabetes Mellitus
When the exhaust is rich, the output of a zirconia oxygen sensor is above 450 mV. When the exhaust is rich, the output of a zirconia oxygen sensor is above 450 mV.
Plant foods such as grains and vegetables are the main sources of nonheme iron in your diet Plant foods such as grains and vegetables are the main sources of nonheme iron in your diet
6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ... 6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ...
The Oil Industry: BOEM iron triangle The Oil Industry: BOEM iron triangle
Video: Introduction to Photolithography - WC, BLF, PA, Hard and Soft baking

For a complete list of videos, visit our video library