Answer:
Space is a vacuum thus you wouldn't be able to hear any noise.
A virus can be inside a body without showing up
Answer:
If we could see your choices, it would better help us to help you.
Explanation:
But, if you are referring to the most widely accepted theory:
Anthropogenic (man-made) Global Warming, or AGW. The theory states that man-made greenhouse gases, primarily carbon dioxide (CO2 ), are the predominant cause for the global warming that has occurred during the past 50 years.
Animal cell shrinks in a hypotonic solution as content in it moves from higher concentration to lower concentration
Hope this helps!