Available Answers

1. 1.

   What is the difference between a food chain and a food web?

2. 2.

   How do humans affect the environment? Give two examples.

3. 3.

   What is the difference between renewable and non-renewable sources of energy? Give examples.

4. 4.

   What is global warming?

5. 5.

   What is recycling? How is it helpful?

6. 6.

   Fill in the blanks.

   1. All living and non-living organisms found in a particular area form the ___________.
   2. The process by which plants make their food is called ___________.
   3. The energy obtained from water is called ___________.
   4. ___________ and ___________ are two main greenhouse gases.
   5. Collecting and reusing rainwater is called ___________.