Beach nourishment involves replacing sand lost through erosion by adding fresh sand brought from another beach or dredged from the sea floor. ... Low-voltage, solar-generated electricity passed through the structure, stimulating corals to grow three to five times faster than normal. ... They absorb or dissipate wave energy better than seawalls since they are flexible and have gays between rocks for water to filter through and drain easily, leaving behind the sediments. ... The last peak was in 2000 with over 150 sunspots and the end of the last solar cycle was in 2008. ... They are formed by n...

• Word Count: 3336
• Approx Pages: 13

Sea level will rise all over the planet. ... Deforestation is in part the result of population expansion in the tropics and the use of land for agriculture and wood for energy. Satellite photos show smoke from the smoldering fires that are rising into the air over the forest. ... The sale of the expensive tropical wood is another. ... Sea level rise would inundate low-lying areas, drown coastal marshes and swamps, erode beaches, exacerbate flooding, and increase the salinity of rivers, bays, and aquifers throughout the world. ...

• Word Count: 2775
• Approx Pages: 11
• Grade Level: Undergraduate