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Breathing Rate in Locusts. Aim: To observe the breathing rate of locusts and to see the effect of changing the temperature and concentration of gases in the air. Hypothesis: I think that with an increase in temperature the locust will increase its breathing rate. I think this because increased temperature increases rate of reaction therefore the rate at which the gases diffuse across the walls of the locusts traceless, and therefore breaths will increase. The reason the rate of reaction increases with heat is because particles need energy to move, and so with increased heat there is increased energy causing particles to move around faster and so collisions happen more frequently. The environmental heat is very important in animals such as locusts as they are poikilothermic which means they don't control they're body temperature on the inside, they rely on their surrounding conditions. In biological organisms the rate of reaction increases...

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