The question is incomplete. The complete question is as follows:
Dieffenbachia plants usually grow well without fertilizer. A student wanted to see if adding liquid fertilizer would make a difference in the growth of the plant. Three plants were placed in the same type of pot with the same type of soil. Two plants received fertilizer and one plant did not. All plants received the same amount of light and water during the experiment.She watched the plants grow over a period of 30 days, only adding the same amount of water to each plant on a weekly basis. What variable is NOT being controlled in this experiment?
Answer:
Amount of fertilizers.
Explanation:
Fertilizers may be defined as the chemicals that are required to increase the quality and quantity of the crops. The chemical fertilizers may cause environment pollution.
The experiment given in the question explains the different conditions at which the plant was grown. The controlled variable is the substance whose value is known and being constant in the experiment. In this experiment, the fertilizer is randomly given to the plant and its value is unknown. So we can say that the fertilizer is not a controlled variable in the experiment.
Thus, the correct answer is amount of fertilizers.
Maybe, mosquitoes lay eggs in still water like a in pail or bucket
The answer is D. Each element is made up of different types of atoms.
An element is made up of one type of atom. The type of atom it is made from depends on the amount of protons in an atom.
It is very condensed compared to gas. The atoms are more compact in water than in gas. Solids are even more compact and are extremely condense compared to gas. Hope this helps!
