What is a primary source? a. a textbook that explains a wide range of science topics b. a technical article written by an experimenter c. a newspaper article about a recent discovery d. a summary of research written for an average reader

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor

Could we see a galaxy that is 20 billion light-years away?