They changed over time by finding the right ingredients such as iron, metal, or steel to forge different creations. They took so slowly because no one was discovered the things to make stone tools.
Answer:
was not a new energy source that was developed to power the new machinery
Answer: Diego is using Active strategy to reduce uncertainty.
Explanation: Active strategy is an act of using a well known tested and trusted method to generate the best result possible.
Diego asking Louisa's sister is an active strategy as Diego doesn't want to leave anything to chance.
It is 2:00 a.m. and allison has been sleeping for several hours. her heart begins to pound and flutter, her fingers twitch, her eyelids flicker, and her breathing becomes shallow and irregular. a sleep researcher would best describe these phenomena as an example of,
an autonomic storm.
-Mabel <3
