Answer:
The word "protracted" means lasting longer than expected, or unusually long, so what protracted most clearly means based on the context of the excerpt is how the time period of celestial motion studies must have lasted unusually long.
Answer:
Activating background knowledge. Research has shown that better comprehension occurs when students are engaged in activities that bridge their old knowledge with the new. ...
Questioning. ...
Analyzing text structure. ...
Visualization. ...
Summarizing.
Answer:
umm
1)maybe it's dangerous in some situations that if he didn't know how to drive maybe they will die
Explanation:
2)the people will stop taking driving lessons cuz they waited too long
Sometimes he whirled down the incline of a wave as if he were on a hand sled.
The man is clearly in a context of desperation or at least difficulty, stuck out at sea on a life preserver. The imagery brings one of a childlike delight or a fun situation. However that is contrary to the actual situation. The man clings to a life preserver, trying to survive, not have fun, but nature rolls on, indifferent to this man's plight.