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17 Cards in this Set
- Front
- Back
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What is diffusion ? |
The movement of oxygen and carbon dioxide particles from a high concentration to a low concentration |
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What is inspiration ? |
Taking in of air |
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What is expiration? |
The breathing out of air |
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What is mucus ? |
The snot which covers your air passages |
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What are cilia ? |
They are small hairs on the inside of the air passes |
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What is passive smoking ? |
When someone is smoking nearby |
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What happens to your torso when you inspire ? |
Diaphragm moves down Ribcage moves up The volume in the lungs increases and the pressure decreases |
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What happens to the torso when we expire ? |
The diaphragm moves up - ribcage moves down - the volume decrease and the pressure increases |
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The functions of mucus and cilia ? |
Cleaning mechanisms of the respiratory system. |
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What effect does smoking have on the cilia ? |
The smoke paralyses the cilia |
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What are quadrats |
A metre square wooden grid |
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What is a transect ? |
A line across a habitat to measure the species |
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What is biodiversity ? |
The number of different species in an area |
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What is biological control ? |
The use of an animal to kill a pest eg. Ladybirds to kill greenfly |
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What are the problems with biological control ? |
If their are no natural predators of the new species |
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Advantages of biological control ? |
Predator found in natural habitat , only feed on pest chosen and when the pest does out the predator will too |
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Disadvantages of biological control ? |
Takes time to breed and release predators, no control over predator and might harm habitat if numbers increase |
