Which feature must a community have in order to use wind energy? A. An average elevation change of 20 feet per mile to allow the wind
to flow downhill
B. Molten rock near groundwater supplies
C. Nets to keep birds and bats away from the turbines
D. An average wind speed of at least 15 miles per hour and enough
land to build several wind turbines
PLEASE HELP ASAP

molten rocck near ground water supplies

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

they have sperm in my gf's mouth

explanation: