<p><strong>Fig. 2.18.</strong> (<strong>A</strong>) A satellite image of an algae bloom in Lake Erie shows swirls of phytoplankton microalgae.</p>

Fig. 2.18. (A) A satellite image of an algae bloom in Lake Erie shows swirls of phytoplankton microalgae.

Image courtesy of National Aeronautics and Space Administration (NASA)