Which statement best explains how genetic mutations produce genetic variation? * A male and a female with different alleles reproduce to make offspring that have a new combination of genotypes and phenotypes.
A strand of DNA is translated into RNA and a codon is skipped. The protein resulting from the RNA strand is expressed as a new trait.
A population of individuals is hunted to the brink of extinction. The remaining individuals reproduce, and their limited genetics are passed on to the subsequent generations.
A cell divides twice, forming four gametes, each with unique characteristics due to crossing over and independent assortment.

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.    

the man is bald so he has no hair to get wet

where is the scientific experiment?