12 DEAD AND LIVING MATTER 



the soil, and how plants and animals grow. He should 

 also strive to learn what crops are likely to repay his 

 labor best, and how to dispose of these to the best ad- 

 vantage of himself and his farm. 



QUESTIONS AND EXERCISES. 



1. What is protoplasm? What is a nucleus? 



2. What three things can the ameba do that a grain of 

 sand can not do? 



3. How do yeast plants increase in number? 



4. What do plants and animals need in order to live? 



5. What are yeast plants used for in your home? 



6. What things are necessary that animals may live? 

 What things do most plants require in order to live? Do 

 yeast plants need light? 



7. In your notebook write five important facts you have 

 learned in this lesson. 



