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 214 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


Liddy

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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.

For a complete list of videos, visit our video library