Water can

... sterile (if plastic). Second, if you "held the plates in boiling water just before pouring the agar into them", your plates are wet at ... increases contamination risk (microbes from the outside of the plate can swim inside the plate). Plates should be dry.

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... them. I heat up the agar by boiling it and I held the plates in boiling water just before pouring the agar into them. I try to open the covers a ... rubber band around each once I'm done pouring. I'm not sure what else I can do to get a sterile environment in the dishes. Any tips? Also, once I ...

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... them instead of pheasants. Chukars and Hungarian partridge compete with California and Gambel's quail. While zebra and quagga mussels do clean up water, I questions JorgeLobo's contention that they've "been credited with...subsequent increase in fish populations." Juvenile fishes need ...

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... Increasing the concentration of CO2 increases the rate of photosynthesis. Experiment Place a pond weed Elodea upside in a test tube containing water at 25°C. Place the tube in a beaker of fresh water. Place excess sodium bicarbonate (NaHCO3) in the water to give a constant saturated solution ...

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... of algae. This generally happens when there is too much algae in the water, in which results in excess of nutrients. This may be because of fertiliser ... lifespan. And as they die, they take up oxygen in the water, which can disturb or even kill other aquatic animals or plants sharing the same ...

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