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The ectoderm forms
Testable Statements
Hypotheses or assertions that can be supported or refuted through empirical observation or experimentation.
Hypotheses
Tentative explanations or predictions that can be tested through observation and experimentation.
Phenomena
Observable facts or events that are subject to scientific examination and explanation.
Happiness
A state of well-being and contentment characterized by positive emotions ranging from satisfaction to intense joy.
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