11. Evidence of extensive glaciation has been suggested as an explanation for extinctions at the end of the Permian period. Such glaciation could have
disrupted ocean ecosystems by producing which effect?
A steep drop in ocean salinity and density
B. steep drop in ocean volume and area
c. increased exposure of oceans to ultraviolet radiation
I
D. increased exposure of tsunamis to ocean life

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water