« previous next »

Author Question: America's indigenous peoples were the first cultivators of what percentage of the crops grown in the ... (Read 51 times)

Lobcity

  • Hero Member
  • *****
  • Posts: 524
on: Aug 11, 2018
America's indigenous peoples were the first cultivators of what percentage of the crops grown in the world today?
 
  a. 10
  b. 30
  c. 60
  d. 80

Question 2

Over the course of our evolutionary history, most environmental stressors were climatic and geographic. Now, however:
 
  a. humans have little environmental stressors, climatic or geographic.
  b. nonhuman primates have more stressors than humans.
  c. humans face a series of new environmental stressors of their own making.
  d. humans also face daily weather stressors.
  e. humans have climatic stress, but geographical stress has been removed because of technology.


ErinKing

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Aug 11, 2018
Answer to Question 1

c

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Gecarcinus quadratus, a land crab from Central and South America Gecarcinus quadratus, a land crab from Central and South America
Graph showing how the boiling point of the coolant increases as the percentage of antifreeze in ... Graph showing how the boiling point of the coolant increases as the percentage of antifreeze in ...
Major Agricultural Crops Produced in the United States, 2011 Major Agricultural Crops Produced in the United States, 2011
The percentage of Canadian students in Grades 7 through 12 who used drugs The percentage of Canadian students in Grades 7 through 12 who used drugs
What percentage? What percentage?
Laboratory-Grown Stem Cells Laboratory-Grown Stem Cells
Video: Regulation of GFR: autoregulation via myogenic mechanism Myogenic mechanism

For a complete list of videos, visit our video library