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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For tyler to make his speech on skateboarding for his physics class more interesting, Tyler should; include striking visual aids.
<h3>Importance of Visual Aids</h3>
Since Tyler is preparing a speech on skateboarding, he needs to use visual aids to make it more interesting.
Now, visual aids are unique techniques and methods that are used to present the specific topic in front of audience and improve the audience's understanding.
These visual aids could include, graphs and pictures to use to illustrate points better and make a very good visual impression.
Read more about Visual Aids at; brainly.com/question/3610367
I would say C. Because babies lungs system is still developing, people with asthmas lungs are week and so are the elderly’s