Is when organisms have to fight/work harder than each other for the things they need to survive.
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What do plants compete for? (4)
Light (for photosynthesis), Water, Minerals, Space
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What do animals compete for? (4)
Space/territory, Food, Water, Mates
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What does interspecific mean?
Competition between organisms of different species.
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What does infraspecific mean?
Competition between organisms of the same species
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What does adaptations mean?
The features that make organisms well suited to their environment.
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What adaptation do Desert plants have?(3)
Water stored in the stem, Spines and small surface to reduce surface area to minimise water loss. Deep/extensive roots.
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What adaptations Desert animals have? (4)
Large surface area to volume ratio - maximise heat loss, concentrated urine and little sweat, thin layer of body fat and fur, camouflaged.
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What adaptations do Arctic animals have?(3)
Small surface area to volume ratio - minimise heat loss, Thick insulating fur and thick layer of fat under the skin, White fur - poor radiator of heat provides camouflage.
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How do organisms stop themselves being eaten? (3)
Armour - eg. roses have thorns and snails have shells, Posions - eg. bees an poison ivy, warning colours - e.g.. wasps
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What are the living factors that cause environmental change?(4)
Infectious diseases, number of predators, number of prey/ availability of food source, number/type of competitors.
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What are the non-living factors that cause environmental change? (3)
Change in temperature, rainfall, air or water pollution.
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What are the three results of environmental change?
Population size increases, Population size decreases, population distribution changes.
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Why would the population size increase?
If the prey/food increases so there is more food for the predators so they survive and reproduce - increasing there numbers.
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Why would the population size decrease? (3)
If there is less food, new pesticides/disease, new predators - less of them survive and reproduce - decreasing the population.
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Why would the population distribution change?
Due to temperature, rainfall or water/air population (Non living factors) - causing them to migrate/ move.
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What are indicator species?
Organisms that are sensitive to change in their environment so can be studied to see the effects of human activities.
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How can air pollution be monitored?
Looking at a particular type of lichen that is sensitive to the concentration of suffer dioxide in the atmosphere - the number and the of lichen in a location can indicate how clean it is.
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What is a good indicator for water pollution?
Some invertebrates such as mayfly large - they are very sensitive to the concentration of dissolved oxygen in the water. If you find mayfly lave at a river - it shows its clean.
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What are satellites used for? What is the advantages of this (3)
To measure the temperature of the sea surface and the amount of snow and ice. - They are modern, accurate and give us a global coverage.
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What do Automatic weather stations do? How?
They tell us the atmospheric temperature - they contain a sensitive accurate thermometer - measure to fraction of a degree.
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What do rain gauges do? Why do we use them?
They measure rainfall - so scientists can find out how much the average rainfall changes per year.
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How do they monitor water pollution? How?
They use dissolved oxygen meters to measure the concentration of oxygen in water.
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Other cards in this set
Card 2
Front
What do plants compete for? (4)
Back
Light (for photosynthesis), Water, Minerals, Space
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