Which statement best describes an environmental consequence of unsealed landfills? Landfills can produce carbon dioxide that leak into the atmosphere. Long-term exposure to mercury and lead in landfills can cause cancers.
Heavy metals are released as leach ate into surrounding waterways.
Materials in landfills undergo decomposition for hundreds of years.

the glands which are associated with each description is given below:

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.

food source and hunting?