The diagram above is an illustration of organisms in an a...
The diagram above is an illustration of organisms in an air-tight aquarium.The most important factor needed by the organisms is
light energy
low humidity
oxygen
nitrate
Correct answer is A
Proper light in the aquarium serves as a form of energy for the photosynthetic plants and animals, hence it is very important.
Which of the following insects lays its eggs in horny, purse-like cases? ...
A unique characteristic of the cervical vertebrae is the presence of ...
The four classes of cnidarians include the following except ...
Which of the following physical actors is likely to affect the distribution of plants in a pond? ...
The presence of an endoskeleton is characteristic of ...
Which of the following animals has homodont dentition? ...
The part that will develop into an organ for feeling is labelled ...
Which of the following is a measure for the control of bilharzia? ...
Which of the following processes removes CO2 from the atmosphere?...