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Author Question: Before humans began to devise ways to produce their own food, most of their time was devoted to ... (Read 376 times)

jessicacav

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on: Jul 21, 2018
Before humans began to devise ways to produce their own food, most of their time was devoted to which purpose?
 
  a. Raising livestock and crops c. Finding enough food to eat
  b. Developing select crop varieties d. Caring for the young

Question 2

____________________ or hybrid vigor comes from the cross breeding of two or more breeds to get an optimal animal.
 
  Fill in the blank(s) with correct word


huda

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

C

Answer to Question 2

Heterosis


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