« previous next »

Author Question: The term ________ refers to a group of elements called lanthanides and actinides that are not often ... (Read 48 times)

burton19126

  • Hero Member
  • *****
  • Posts: 532
on: Jul 14, 2018
The term ________ refers to a group of elements called lanthanides and actinides that are not often found in large, commercially valuable quantities.
 
  A) special earths
  B) restricted minerals
  C) rare earths
  D) earth obscures
  E) nonelastic minerals

Question 2

Total world reserves of lithium are sufficient to last ________ years at current consumption rates.
 
  A) 12
  B) 50
  C) 200
  D) 2,500
  E) 500


b614102004

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors
Elk pellet group Elk pellet group
The Role of the Hippocampus and Cerebral Cortex in Long-Term Memory Storage The Role of the Hippocampus and Cerebral Cortex in Long-Term Memory Storage
A group therapy session. A group therapy session.
Alternative splicing of pre-mRNA for a muscle protein called α-tropomyosin Alternative splicing of pre-mRNA for a muscle protein called α-tropomyosin
A commercially available DNA microarray, called a GeneChip, marketed by Affymetrix, Inc A commercially available DNA microarray, called a GeneChip, marketed by Affymetrix, Inc
Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

For a complete list of videos, visit our video library