Lesson 3.1 - Producing More Products

In addition to needing more food and energy, people also needed refrigeration to keep food from spoiling.  Again, a substance was found that seemed to work well.  However, as technology advanced, chlorofluorocarbons used for refrigeration were discovered to have damaging effects on the ozone layer. 

Ozone depletion results in more skin cancers for humans and more cataract problems that affect a person's vision.  Major food crops may not grow as well.  Also, phytoplankton in the ocean can be killed and this would affect adversely all food chains and webs in the ocean. 

Read everything under Producing More Products on pages 299 and 301 in the textbook. Then, answer the following questions.

 

Question 1. Answer Reading Check on page 299 of your textbook.

Question 2. Answer Reading Check on page 301 of your textbook.

Question 3. Answer Check Your Understanding questions 1 - 4 on page 301 of your textbook.

 

Check your answers with those that follow.

 

 

 

 

 

 

 

 

 

 

 

Answers to Questions:

Question 1. Answer Reading Check on page 299 of your textbook.

The group of chemicals was chlorofluorocarbons or CFCs.

Question 2. Answer Reading Check on page 301 of your textbook.

A thinner ozone layer could result in more skin cancer, eye damage, stunted plant growth, and a decrease in phytoplankton.

Question 3. Answer Check Your Understanding questions 1 - 4 on page 301 of your textbook.

1.    The ozone layer is a layer of oxygen in the form of three atoms per molecule.  It protects living things on earth from UV radiation.

2.    CFCs are chlorofluorocarbons; destroy ozone molecules.

3.    A thinner ozone layer could result in more skin cancer, eye damage, stunted plant growth, and a decrease in phytoplankton.

4.   Many answers are possible here, including the burning of fossil fuels to run cars and the disposal of batteries that has many environmental problems.

 


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