A) stetch both sides the same B) only stretch one side C) stretch one side tighter
A) about 3.4 billion years B) about 4.5 billion years C) about 6000 years D) about 18-20 billion years
A) Cosmic - origin of time, space, and matter. B) Macro - changing from one kind to another. C) Micro - variations within kinds D) Chemical - the origin of higher elements from hydrogen.
A) nothing B) a mass a few light years in diameter C) a mass the trillionth the diameter of a protron
A) loose B) increase
A) neither of these B) closer to the earth C) away from the earth
A) speeding up B) staying the same C) slowing down
A) yes B) I don't know C) no
A) less saltier B) saltier C) neither |