Refer to the Department of Energy's "Guide to Renewable Energy." What is the author's purpose in mentioning the types of renewable energy systems?

to prove that renewable energy systems work effectively to save energy and money

to introduce three systems homeowners can install to save energy and money

to describe how each energy system is installed

to compare renewable systems to see which one works best

you can change by someone having a negative opinon of you in many ways for example thi can lead to depression and taking of ones life also known as sucide this effects there self esteem and ego in a negative way making them feel sad depressed and stressed causing them to act gloomy and sad if this continuses this can lead to self harm or much worse things.

hope i .

2: "jesse kept on, his voice rising in anger."

4: "andy stormed out angrily."

i answered the question and it said these two were right : )

i hope this