Mr. Mann's class conducted an experiment about plant response to the presence of water. They first planted pea seeds in the sand. To start with, they watered the seeds. Once the seeds began to grow, they reduced the water they gave the plants. Instead, they placed a porous container of water close to the growing plant to see if the plant's roots would grow towards the cup of water. In science language, this plant response is called hydrotropism. An illustration of the experimental design can be seen here. What is the manipulated variable in this experiment? A) plant root growth B) the sand used to grow the seeds C) limited watering, replaced by the cup of water D) the water used to germinate the seeds and get them growing
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Biology, 22.06.2019 08:30
What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons
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How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans
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Kate is studying the transformation from unicellular to multicellular organisms. which metaphor is the most appropriate to apply to the map of the timeline.
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Mr. Mann's class conducted an experiment about plant response to the presence of water. They first p...
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