After learning about climate change in her science class, selena wants to make a few changes at home so she can affect climate change in a small way. which changes will give her the best results?
a. switch off appliances that are not in use.
b. study harder for school tests.
c. eat more nutritious foods.
d. recycle used books and magazines.
e. assist her father with household chores.

The correct option are A and D.

Explanation:

A. Switch off appliances that are not in use.

D.Recycle used books and magazines;

This is because of following reasons:

Switching of the appliances when not in use will save the electrical energy from wastage.As it will also indirectly save other useful resources from which this electrical energy is generated.With less use of energy she will also able to save money.By recycling books and magazines she able to reduce paper wastage.She will be able to create more clean and green environment.By recycling books and magazines she will be able to save trees from cutting down from which paper is manufactured.

They are like other investigations? say there was a murder u have to do blood test and finger prints which run through a lab.