They should study about how volcanoes erupt or explodes
A factor in determining the carrying capacity of a city's environment is the water resources available to meet city needs. This is assuming this is one of the following city needs in this question. This is the only answer that pertains to the environment.
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An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences.
1. Moist adiabatic lapse rate.
2. Normal lapse rate.
3. Dry adiabatic lapse rate.
4. Adiabatic lapse rate.