The correct statement is this one: Molecules move from areas of high concentration to areas of low concentration.
This is true also for diffusion outside of organisms, for example diffusion of gases in a room.
The other options are false.
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Answer: social and economic
The development of new technologies such as installation of solar panels or the use of geothermal energy to prevent global warming is a social and economic effect. The energy being generated by these processes are useful for human society. This is a social and economic effort done by society in favor of mankind. The energy generated by this process is used in electricity generation and for industrial and commercial needs.
The layers of rocks, the ancient treasures that are at the bottom of the sea, how old the coral is. But I don't think they determined how old it is, how would the dinosaurs that lived in water swim or any drink water. I don't know if this helps but hopefully it does. Also scientist have made advanced tech that could help with the age determination of the ocean floor.
#1. Keeping pressure in the plant. #2. Keeping structure from collapse while growing.