In a combustion reaction, fuel is burned and reacts with oxygen to release energy. Respiration is the chemical change that takes place inside living cells. Glucose and oxygen are used to release ...
The fight-flight-freeze response is an automatic stress response that protects you from perceived threats by helping you fight, flee, or stay still. Adrenaline and cortisol trigger fast body changes ...
To the first test-tube insert a glowing splint – record your observations. Repeat with the second test-tube of gas.
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