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Abiotic Factors (GCSE Biology)

The following is a GCSE Biology test covering 'Abiotic Factors' from the broader topic Ecology. The test is geared towards the AQA exam board style syllabus.
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Which abiotic factor would most affect which species can survive on a mountaintop compared with valley floors?
Which abiotic factor would most likely be the limiting factor for a plant growth experiment performed inside a sealed jar?
Which abiotic factor is most likely the limiting factor when a greenhouse plant’s growth increases as light intensity rises but then plateaus?
In a coastal estuary, which abiotic factor fluctuates daily and strongly affects which species can live there?
Salt concentration in soil is an abiotic factor. How will very high soil salinity most directly affect plant cells?
In aquatic ecosystems, which abiotic factor most directly limits the distribution of many fish species?
Soil pH is an abiotic factor. Which plant nutrient availability is commonly affected by soil pH?
In a river, turbidity is an abiotic factor. What does high turbidity indicate?
Which abiotic factor is measured in parts per million (ppm) and is essential for plant photosynthesis in open-air experiments?
Which abiotic factor most directly affects the rate of photosynthesis in plants?
Which abiotic factor would you vary to test its effect on the rate of seed germination in a laboratory experiment?