The independent variable would be the amount of sunlight because that is what you are testing and the dependent variable would be the length of time the mice slept because it is what you are measuring. The constants would be everything else water, food, cage size, exercise wheel, and temperature because they stay the same.
Explanation:
hope the picture make sense :)
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An Endothermic Reaction occurs when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products
An Exothermic reaction is one that releases energy in the form of heat or light.
</span>Exothermic Reactions: Rust and Setting of Cement
Endothermic Reactions: Photosynthesis and evaporation.
One example of an endothermic reaction is Ice packs. The packs that deliver instant cooling when a seal inside is broken. It works by having water and ammonium nitrate in separate compartments and then when you break the seal between them they mix. The reaction is endothermic so it takes in heat from the surroundings so the pack become cold.
I hoped this helped you!
Answer:
eye witnesses, dna, fingerprints, hair, time stamped photos/ videos
Explanation:
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I believe the correct answers from the choices listed above is option B and D. The type of substances that would classify salt water would be homogeneous mixture and a solution. Salt water has uniform properties all through out. Hope this answers the question.
