Cyanobacteria are of cyan color, which is a turquoise blue color, and they are also referred to as blue, green algae. The green algae are green in color. Cyanobacteria are referred to as prokaryotic organisms, while the green algae are referred to as eukaryotic organisms. Cyanobacteria have the ability to photosynthesize, which means they can produce their food by themselves with the help of sunlight. Cyanobacteria release a kind of toxin that is dangerous to some aquatic organisms, such as snails, insects, and some plants.
This makes them be unfavorable to the aquatic ecosystem. The toxin is also toxic to the zooplankton, while the green algae serve as a source of food for the zooplankton. Cyanobacteria do reproduce asexually through spore production, binary fusion, or fragmentation, while green algae can reproduce both sexually and asexually. Cyanobacteria are larger in size, and are multi-cellular organisms, while green algae are unicellular organisms. Cyanobacteria can survive several habits than green algae.
Actually I would say 0 degrees. Com'on, let's make the game easy.