A group of tissue that work together is a organ
Answer:
Control group
Explanation:
A control group is<em> a group of individuals in an experiment where the independent variable being tested (the exposition to cigarette smoke in this case) can't influence the results.</em> This control group will be then compared to the experimental group (exposed to the smoke) to see the effect of the variable evaluated.
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Answer:
the part that is labeled y helps the plant get water, since plants arent like us they need to have something in their cell to help them get water because they can't just get up and go get a drink like us.