How does agriculture contribute to the global population in relation to health and food supplies?

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.

maybe because its impossible for balloons to lift a whole entire house.

im not intirely sure but i think the anwser is d relative humidity