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27 Cards in this Set
- Front
- Back
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Population |
A group of organisms of THE SAME SPECIES living at THE SAME PLACE at the SAME TIME |
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A community |
ALL the populations living in the SAME AREA at the SAME TIME |
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Ecosystem |
All the biotic factors and all the abiotic factors interact with each other |
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Quadrats measure |
Species richness Percentage cover Number of an individual species. |
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Biodiversity |
The range and variety of different species |
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What does a food chain show |
It shows the tra safer of energy from one organism to another |
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Energy is lost through |
Movement Heat Making waste products Undigested waste |
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Interdependence |
How the change in one population can affect the other. |
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Food pyramids |
Shows how many organisms are present at each level of the food chain. |
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Pyramids of energy |
The amount of energy contained within the biomass of each individual. |
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Why are UV Ray's harmful |
Causes skin cancer Skin damages Suppression of the immune system |
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Greenhouse effect |
A natural process heating the earth's surface. |
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Effects of acid rain |
Damages skin Corrosion of metals Wearing of stone pillars |
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Fertilizers in rain |
Chemicals will end up in water bodies allowing algae growth to spread leaving less oxygen present for plants |
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Greenhouses |
Transparent walls allow light to enter. |
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Inorganic fertilizers |
Replaces the mineral ions lost from the farmland. Leads to pollution. |
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Growing legumes |
They have nitrogen fixing bacteria in their roots. This would convert the nitrogen leading plants to make proteins |
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Ways pests can harm crops |
Lowering the amount of yield. Affecting the quality of yield. |
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Methods used to control pests |
Biological control Pesticides |
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Bioaccumalation |
Build up of pollutants in the fatty tissues of an organism |
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Problems with pesticides |
Last for a prolonged period of time The pests may gain resistance Bioaccumulation |
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An ideal pesticide |
Should be easy to use Specific to only kill pests Safe to transport must not get bioaccumulated |
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Biological control |
Using another living organism to reduce the pests. |
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Disadvantages of fish farming |
Diseases can spread faster Fish faeces could pollute outside waters |
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Advantages of fish farming |
Can monitor the water quality. |
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Greenhouse effect |
Short length infrared Ray's from the sun reach earth. These will be absorbed the earth and then emitted as longer wave infrared radiations. These long wave IR radiations may get absorbed by the greenhouse gasses causing them to get re emitted back to earth. |
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Signs of carbon monoxide poisoning |
Headaches Nausea Dizziness |
