« previous next »

Author Question: What is the main mineral source of phosphorous in phosphate fertilizers? A) Topaz B) Calcite C) ... (Read 61 times)

c0205847

  • Hero Member
  • *****
  • Posts: 531
on: Jul 15, 2018
What is the main mineral source of phosphorous in phosphate fertilizers?
 
  A) Topaz
  B) Calcite
  C) Kaolinite
  D) Apatite

Question 2

List three economic materials that can be profitably extracted from placer deposits.
 
  A) Gold, platinum, and tin
  B) Diamonds, iron, and quartz
  C) Sand, gravel, and silt
  D) Granite, basalt, and gabbro


heyhey123

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f
Flynn Effect IQ scores have risen across developed countries in recent decades. Source: Flynn (199 Flynn Effect IQ scores have risen across developed countries in recent decades. Source: Flynn (199
Table 6.1 illustrates the main regime types and their differences. It breaks the regimes into four Table 6.1 illustrates the main regime types and their differences. It breaks the regimes into four
A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there
Creatine phosphate Creatine phosphate
Biosynthesis of nitric oxide and creatine phosphate from arginine Biosynthesis of nitric oxide and creatine phosphate from arginine
Video: Mitochondrial Structure & ETC Protein Complexes (Protein Complexes and Electron Transport)

For a complete list of videos, visit our video library