Dr. Alan Hicks entered a cave and noted thousands of dying and dead bats. Surprisingly, they all had white fungal growth on their noses (white-nose syndrome or WNS). This same phenomenon was observed in many caves. This repeated observation of an occurrence in the natural world is called a(n) . Dr. Hicks contacted other scientists, and together they set out to determine what was causing the white noses on the bats, for they suspected that it was leading to the bat deaths. This potential explanation is termed a(n) . Several different types of experiments were set up to test the idea that the fungus was leading to death in the bats. Eventually, it was determined that contact with Pseudogymnoascus destructans does lead to sickness and death in bats. The repeated testing of this idea, along with other scientific knowledge, allowed the scientists to develop the that Pseudogymnoascus destructans causes WNS, which leads to the eventual death of the bats.

answer; /// i believe that the correct answer is; ///a combination of the birth and death

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.    

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.