SCIENCE 20S  -  
   
   

 
Unit II:  Dynamics of Ecosystems  
   - section 1.5 p.22-23 Questions 3-6 p.23
  - Ecosystems & Energy Pathways read p33-39 Understanding Concepts 1-6,9 p.39
   - Species at Risk  Species at Risk Poster 
Species at Risk Notes  
 - Extinction in the Modern World Questions 1-3 p. 19
  Roles in an Ecosystem Read p. 40-44
  Do: 1-3 p. 44; 3,6,9-11 p. 46
  Predator-Prey
 DDT in the Food Chain Assignment         Sol'n
   
   
   
   
   
   
Unit I:  Chemistry in Action  
 
Chapter 5  
Key for
 - Ions in Chem Compounds  Key
  -  Atoms & Ions
  - Simple Ions
Ch. 5 Review Key
Ch. 5 TEST  - Tuesday, April3rd  
   
  Chapter 6  
  Balancing Chem Equations  
  Balancing Chem Equations-2        
  More Equations to Balance  
  Word Equations to Chem Equations   
 
 
   
   
   
   
   

 
   
 
 
   
   
   
   
   
   
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