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The aquatic animals in the lake will likely suffer greatly or possibly die from the decrease in temperature because as the temperature plummets, the oxygen molecules will stretch farther apart so there will be less oxygen in the water.
Rotational symmetry is radial symmetry which means that the shape is the same after several rotations. In five-fold rotational symmetry<span> the number of distinct orientations in which the object looks the same is five. </span>
Living organisms whose shapes have five-fold rotational symmetry are sea stars (starfish) and sea urchin. They <span>can be mapped onto itself through rotation about a central point by an angle of 2π/5. </span>
A chromosome is a strand of DNA that is encoded with genes. In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) for a total of 46.
