Hypothesis: If plants are placed in white light, then the will grow better than plants in other colours of light.
Independent variable: Colour of light.
Dependent variable: plant growth.
Control group: the plant in the closet.
Experimental group: the plant is the other light colours.
Constants: miracle grow and amount of water.
Measurements: height of plants.
Answer: So there are 5 levels,
to describe it you'd have to say :
At first level there are CELLS that makes up the TISSUES in hich the tissues makes up the plant's ORGANS and these organs combine to make the ORGAN SYSTEM.
Explanation:
The answer is the second statement.
Quanitative refers to numbers. The only statement that contains a numerical information is "the tree was 20 years old when it was cut down".
The other statements only contain qualitative information.
