B
(without the control you won't know what a normal result would be without the independent variable).
Extinction happens when there is a major climate change, then some species are unable to adapt to those changes, so they become extinct. Extinction basically occurs when species are unable to adapt quickly enough to the environment
Answer: Faster-evolving gene sequences provide better data for comparisons among close relatives, whereas very slowly evolving sequences work best for distantly related tax.
Robert hooke coined the term cell when studying thin slices of cork. these Dead
Plant Cells were the first cells observed because the thick cells.
