What formula do you use to estimate population size using the capture and recapture method?
(Number in first sample x number in second sample) / number in second sample previously marked
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What is zonation?
The gradual change in te distribution of species across a habitat.
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What is biodiversity?
A measure of the variety of life in a area.
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What is glucose converted into in plants?
For respiration, Cells walls, Stored in seeds, starch, proteins
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What is diffusion?
The net movment of particles fram and area of higher concentration to an area of lower concentration.
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What is osmosis?
The net movement of water molecules across a partially permeable membrane from a region of higher concentration to a region of lower concentration
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What does the phloem tube do?
Transports food up and down called translocation
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What does the xylem vessel do?
Transports water up. MAde of dead cells.
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What is transpirstion increased by?
Light intensity, air pressure, air movement, air humidity gets yellow older leaves
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What three main minerals do plants need?
Nitrates- amino acids, proteins Phosphates- respiration and growth has poor root growth and discoloured older leaves Potassium- helps the enzymes needed for photosynthesis and respiration. Poor flowe and fruit growth, discoloured leaves.
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What factors affect decay?
Temperature, amount of water amount of air, oxygen
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