The answer is A, the immune system
Answer:
It grows healthy crops......
A- Always wear your seat belt! It could save your life!
Some ideas for this are:
-Promotion of recycling
-Promotion of exercise and healthy eating
-Promote anti global warming tactics
-Promote anti drug use
For any of these, simply look up:
-A catchy phrase
-Bad effects if no action is done
-Good effects if action is done
