Fact 1: Insect bites cause harm to living things.

Fact 2: Pesticides kill insects and disease pathogens.

Given the two facts above, answer the question "Living things can be protected by" with the following options: 
- foolish behavior
 - exoskeleton
 - shells
 - Quasars
 - coral reefs
 - malnutrition
 - layers of fat
 - pesticides


 

        pesticides 