Answer:
Jupiter and Saturn
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Groups of cells make tissues.
Groups of tissues make organs.
Groups of organs make organisms.
Groups of organisms make communities.
The BOLD sentence above is your answer.
Calorimeters can be improved by impeding the loss of heat to the surroundings. A few things can improve this:
better insulation
less surface area to the surroundings
accurate heating
better stirring/mixing mechanism
D. they are composed of two or more types of matter
That is the 1st Law
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