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