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 272 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
Great answer, keep it coming :)


cam1229

  • Member
  • Posts: 329
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

For a complete list of videos, visit our video library