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Author Question: Which of the following fertilizer nutrients is NOT obtained from mining? a. phosphorus c. ... (Read 173 times)

Alygatorr01285

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on: Jul 21, 2018
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


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ong527

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Reply #1 on: Jul 21, 2018
Answer to Question 1

B

Answer to Question 2

D


Alygatorr01285

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Reply 2 on: Jul 21, 2018
Excellent

tranoy

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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