Answer:
Oxygen is reduced, gaining electrons and hydrogen ions. -second choice
Scientists are preserving the DNA for research.
Answer:
anaphase I homologous pairs separate
An individuals head with the similarity of a frog mind or has no throat.
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