In some years, weather patterns have caused there to be few fish in local lakes, and anglers have gone elsewhere. Also, invasive carp are threatening the lakes and may someday cause fish stocks to drop indefinitely. How should these facts impact Dave and Betsy’s planning?

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the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.