in order to construct the pyramids, the Egyptians needed to be proficient in engineering and_ im so lost

Hurry ! between 1900 and 2010, how did the world’s population change? a. it increased from about 1.5 billion to almost 7 billion. b. it decreased from about 7 billion to about 1 billion. c. it increased from about 5 billion to about 7 billion. d. it decreased from about 7 billion to about 1.5 billion.

Below is a description of a resource that you're considering using for a research paper. as you read the description, keep in mind what you've learned about historical thinking skills and use those skills in evaluating whether or not to use the source.

Melissa’s mother, rita baker, shows up shortly after the hospital receives melissa’s letter requesting release of her information to her attorney again. rita states that the attorney needs the copies as soon as possible due to a court deadline, refers to it as “an emergency” and asks to be given the copies of melissa’s medical record to take to the attorney’s office. what action should the record clerk take and why?