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

Author Question: Early farmers in America were not able to use commercial fertilizers to improve cropland, instead ... (Read 261 times)

abern

  • Hero Member
  • *****
  • Posts: 533
Early farmers in America were not able to use commercial fertilizers to improve cropland, instead the _____ method was used.
 
  a. slash-and-burn
  b. squat-and-farm
  c. soil improvement
  d. organic

Question 2

Breathing, or gas exchange, takes place in tissue called _____.
 
  a. setae
  b. chelicerae
  c. accordion lobes
  d. booklungs



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jamesnevil303

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

c

Answer to Question 2

D




abern

  • Member
  • Posts: 533
Reply 2 on: Jul 21, 2018
Excellent


DylanD1323

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

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.

For a complete list of videos, visit our video library