Once the box starts moving, the magnitude of the resultant force increases instantaneously. How do you explain that?

answer; /// i believe the name your looking for is called (plaque)or check good luck

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.