Answer:
me
Explanation:
I'm in a bit of a pickle here and I require assistance
Sorry but i really don't understand that question
Answer:
1) B. The change in energy in a system during an exothermir reaction
2) B. In the air, only the oxygen is part of the system
3) B. The energy found in the reactants....
4) D. This is an endothermic reaction because the system took energy from the surroundings.
5) B. Energy is released by the formation of chemical bonds
Explanation:
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A. Most body language is related to emotion and attitudes.
The answer is C, they show info about years in the past, present and future, ask your teacher or any website and they can show you a line graph. :)