Earth

1. ANIMALS

1.1. don't kill

1.2. be vegans

1.3. man made fur

2. ENERGY

2.1. to turn off the light

2.2. use solar panels

2.3. use energy-saving light

3. SOIL

3.1. compost heap

3.2. collect garbage

4. PLANTS

4.1. not to cut down tress

4.2. visit the national parks

5. AIR

5.1. electric auto

5.2. ride a bike

5.3. walk

6. WATER

6.1. short shower

6.2. not to pour water

7. 3 r-s

7.1. reduce

7.2. recycle

7.3. reuse