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Biology Unit 4
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Topic 5: On the wild side
17. Describe how to investigate the effects of
temperature on the development of organisms (eg
seedling growth rate, brine shrimp hatch rates).
You will need:

Brine shrimp egg cysts
2g sea salt for each treatment
100cm³ de-chlorinated water…

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Biology Unit 4
Revision Notes

pipette catch the brine shrimp and place them in a small beaker of salt water. Repeat the
counting daily for several days. Brine shrimps are very delicate and care must be taken when
handling them.

12. Record the number of larvae that have successfully hatched…


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