The simple answer is, ALWAYS have an evacuation plan.
If in an earthquake stay away from cabinets, climb under a table or chair, and do the right sitting position (Hold on to your neck position.)
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The first answer is the correct one. Osmosis is only water and diffusion is everything else across a semi-permeable membrane.
The ecosystem that would most likely have a very high net primary productivity is a tropical rain forest. This type of an ecosystem is characterized by constant temperature, high annual rainfall, nutrient-poor soil, and high levels of diversity. The level of humidity and density of the vegetation give the ecosystem a unique water and nutrient cycle.