A. xx
b.x+x+
c.x0x0
d.x+x0
e. x0y
Answer: <em><u>1838</u></em>
Explanation: In 1838 Schwann became familiar with Matthias Schleiden's microscopic research on plants.
I would say the results of the experiment but not the hypothesis, if we're saying possible corrections to the hypothesis count as something outside of it
The examination above is called Cohort Observational Study. The cohort study is a sort of restorative research used to explore the reasons for the malady, building up joins between chance variables and wellbeing results. Partner ponders are as a rule forward-looking - that is, they are "forthcoming" studies, or arranged ahead of time and did over a future timeframe
