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​Seawater is ____ even though dissolved CO2 forms into a carbonic acid when combined with water.

Find the interval of convergence of the power series. ∑n=1∞(x−3)n4n{“version”:”1.1″,”math”:”\sum_{n = 1}^{\infty}\,\frac{(x-3)^{n}}{4^{n}}”}

Scientists believe the breakup of Pangaea occurred about ____.

Which of the following terms refers to an actual cost rather than an estimate?

​Waves with the greatest celerity, or speed, ____.

Determine the convergence or divergence of the series. State which test you are using, show its application, and clearly state whether the series converges or diverges. ∑n=1∞n7n−2{“version”:”1.1″,”math”:”\sum_{n = 1}^{\infty}\,\frac{n}{7n-2}”}

The white cliffs of Dover are chalk-like deposits of coccolithophores that are around 100 million years old.

The Hawai’ian Islands formed as they pass over a hot spot in the middle of the ____.

​Chemosynthesis is the biological conversion of simple carbon molecules into carbohydrate using ____ as a course of energy.

Which of these is commonly an effect of El Niño?