Describe an investigation you could do to show how much more a normal plant grows compared with a variegated plant over a six-week period.
In your answer, you must clearly identify:
the independent variable (IV)
the dependent variable (DV)
the variables to control (CV)
how you will calculate the end result.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

b a mature ovary of a plant.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.