A student wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. To test this hypothesis, the stu
dent put the same amount of grass seed in 3 containers with the same type of soil. The student measured the growth at the end of the week. All plants received equal amounts of water and sunlight what is the dependant variable
The growth rate is the dependent variable in the experiment because the growth rate of the plants is dependent on the fertilizers. The factor that cannot be changed by the experimenter is known as dependent variable and it is dependent on the independent variables.
The students wants to see the effect of the fertilizers on the growth of the plants. The fertilizer is independent variable which can be changed by the experimenter.
The plants growth depends on many factors, these factors are fertilizers, amount of light, amount of water, et cetera.
Excluding fertilizers rest of the factors are kept same and are controlled factors.
A habitat defines the interaction of organisms with the other factors, which can be living or non-living, while niche describes how that specific organism is linked with its physical and biological environment. Habitat is the part of the ecosystem, while niche plays an important role in the formation of an ecosystem.
