In two separate boating incidents, one as a teenager on the Mississippi River and one on the Great Lakes, President Lincoln got his boats stuck in shallow waters, known as shoals.. These two experiences inspired Lincoln to invent a solution to help him navigate his boat through shallow waters.
Algae are simple plants. The biggest similarity with more  'regular' lants is that they both contain chlorophyll    Green algae and plants are sister taxon, that is, tâ¦hey share a  common ancestor.    For this reason, they both have double membrane bound plastids that  contain chlorophyll a and b.
Algae and Chlorophyll a . What are algae? Algae are one celled, free floating, organisms that produce their own food by photosynthesis. Chlorophyll, the same green pigment plants contain, allows them to convert the energy from sunlight into food. Algae ar e among the primary producers of food and oxygen in the Bay. Some algae grow in coloniesâgroups of cells that grow and move together which can form filaments (threads) or large mats. Some algae are