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Author Question: Which type of spacecraft does NOT need to carry any fuel? A) nuclear rockets B) ion engines ... (Read 119 times)

dejastew

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on: Jul 27, 2018
Which type of spacecraft does NOT need to carry any fuel?
 
  A) nuclear rockets
  B) ion engines
  C) solar sails
  D) chemical rockets

Question 2

Mild, short-term cooling periods during the Earth's history are known as
 
  A) ice storms
  B) nuclear winters
  C) snowball Earth
  D) ice ages


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vkodali

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


dejastew

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Reply 2 on: Jul 27, 2018
Gracias!

cici

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Reply 3 on: Yesterday
Wow, this really help

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