Answer:
Carbon in form of carbondioxide is used by plants during photosynthesis. Explanation: According to this question, the aquarium contains water, plants and fish. The glass of the aquarium is transparent and allows the passage of light
The answer to the question mentioned above is "Synaptic Cleft".
The region composed of a presynaptic cell, its target cell and the space between them is a Synaptic Cell. This cell exists between the neurons and this is a microscopic gap.
Algae, Bacteria and Fungi
I believe they were the spleen and thymus.
Organisms needs nutrients in order to survive. Without nutrients an organisms won't be healthy and will be caused with death.
Hope this helped! :D