This topic contains a solution. Click here to go to the answer

Author Question: Which of the following fertilizer nutrients is NOT obtained from mining? a. phosphorus c. ... (Read 87 times)

Alygatorr01285

  • Hero Member
  • *****
  • Posts: 564
Which of the following fertilizer nutrients is NOT obtained from mining?
 
  a. phosphorus c. potassium
  b. nitrogen d. calcium

Question 2

Before tools were invented, humans used _____.
 
  a. rocks c. their hands
  b. flint d. all of the above



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ong527

  • Sr. Member
  • ****
  • Posts: 285
Answer to Question 1

B

Answer to Question 2

D




Alygatorr01285

  • Member
  • Posts: 564
Reply 2 on: Jul 21, 2018
YES! Correct, THANKS for helping me on my review


jomama

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

For a complete list of videos, visit our video library