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Biology, 21.06.2019 18:30
This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is
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Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.
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Biology, 22.06.2019 11:30
In "the pig," what is the main effect that the piglet initially has on kibuka?
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What causes the change from day to night and vice versa?...
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