Answer:
No, it is not
Explanation:
The reason for this answer is below
To conduct an experiment/investigation that involves the use of specific amounts of carbon dioxide and water by plants, one needs a controlled environment where the amount of carbon dioxide and water made available to the plant can be monitored and regulated as desired by the experimental design. The neighbor's backyard cannot provide this controlled environment and thus it is a bad idea.
Note that the neighbor's backyard cannot provide the controlled environment because the amount of carbon dioxide the plants will be exposed to there cannot be regulated as this is the carbon dioxide from the atmosphere and also the plants could get additional water from midnight dew which cannot be regulated also.
It is a good idea to use backyard garden to conduct an investigation of
how tomato plants use specific amounts of carbon dioxide and water to
grow at a certain rate.
To obtain an accurate result, experiments should be done in an
environment which is similar to those in which plants are exposed to during
photosynthetic reactions.
The use of the backyard garden will have different factors such as
atmospheric pressure, sunlight, precipitation which the plants are exposed to
in its normal environment which is why it is a good idea.
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