This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following fertilizer nutrients is NOT obtained from mining? a. phosphorus c. ... (Read 82 times)

Alygatorr01285

  • Hero Member
  • *****
  • Posts: 564
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


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

B

Answer to Question 2

D


Alygatorr01285

  • Member
  • Posts: 564
Reply 2 on: Jul 21, 2018
Great answer, keep it coming :)

coreycathey

  • Member
  • Posts: 333
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

The major types of plant nutrients and their sources. The major types of plant nutrients and their sources.
Primary production increases with an increase in total phosphorus concentration. Primary production increases with an increase in total phosphorus concentration.
Mining Mineral Resources Mining Mineral Resources
The Stillwater Mining Company The Stillwater Mining Company
Nutrients and Their Functions Nutrients and Their Functions
Getting the Nutrients You Need within Limitations Getting the Nutrients You Need within Limitations
Video: Contraction cycle of a sarcomere

For a complete list of videos, visit our video library