The temperature of this universe was 1.8 x 10^32 degrees F one second after birth.
I think it will be 'heat' because it doesn't change - only your material changes.
Answer:
theme gives readers better understanding of main characters conflict , experiences discoveries
Answer: An encyclopedia that provides factual details about the finding of lucy
Explanation: A primary source is somebody who was there, or a record made by somebody who was there. Examples of a primary source would be;
Somebody telling a story about something they were there for
An account of what happened, written by somebody who was there/part of the process
A Secondary source is something that may still be factual, is not coming straight from the mouth of somebody who was there. Examples of a Secondary source;
A friend telling somebody about what happened to their friend
And article that was not written by somebody who was there, usually containing quotes from a primary source.