Heterocyst-forming cyanobacteria differentiate highly specialized cells to provide fixed nitrogen to the vegetative cells in a filament. In the presence of a source of combined nitrogen such as nitrate or ammonium, Anabaena PCC 7120 grows as long filaments containing hundreds of photosynthetic vegetative cells.
Answer:
The carbon-dioxide exists in the atmosphere, and it is dissolved in the water.
Explanation:
With the process of photosynthesis, it becomes organic, and by breathing, the organic gas goes back to carbon-dioxide.
The assimilation of carbon is the process when the carbon-dioxide converts to organic carbon with the help of living organisms. This organic carbon is then used for energy.
A Dialog Controller<span> (DC) is an element that composes the Language Comprehension module and provide a way of establishing a </span>dialog<span> between two agents. A DC can be prepared to answer questions or start a new conversation spontaneously. For instance, the internal state of a given agent can be monitored.</span>
Answer:
some sort of water system, (a river/groundwater/purification plant ect.)
Explanation:
