As a result, water will flow across the cell membrane into that cell (down its concentration gradient) from the surrounding environment eventually causing the cell to swell and burst (c). Hypertonic â refers to a solution that is higher in solutes than that inside of a cell.
The scientific evidence is clear. Within the scientific community, there is no debate. An overwhelming majority of climate scientists agree that global warming is happening and that human activity is the primary cause.
Yet back home, President Obama still faces an electorate that doesnât believe climate change is caused by humans. Only 40% of Americans attribute global warming to human activity, according to a recent Pew Research Center poll. This, despite decades of scientific evidence and the fact that Americans generally trust climate scientists. Despite decades of evidence, most Americans don't believe that humans are causing climate change. That apparent cognitive dissonance has vexed two scientists in particular: Michael Ranney, a professor of education at the University of California, Berkeley, and Dan Kahan, a professor of law at Yale University.