What type of source is this?

hammond's historical atlas

primary source
secondary source
reference source
general source

Will mark first as brainliest how did homer use the design process? identify the steps of the pltw design process that you saw in the movie. sketch out a flowchart.what iterative process did homer have to go through on his rocket designs and how have you had similar experiences on designs so far in engineering class? what did you learn about rocketry that you think will be as you create your own rocket design?

Write about a scientist and present information including a short biography, contribution,their scientific achievements and contribution to science

What is the narrators main conflict in this passage