Answer:
is there multiple choices? i would say social hierarchy or society.
Explanation:
Cell controls on division contact with other cells once DNA (cell directions) is copied, cell divides sequence of steps
<span>One of the essential early steps in the inventing process is creating a prototype--which, simply defined, is a three-dimensional version of your vision. Creating a prototype can also be one of the most fun and rewarding steps you'll take. That's because developing a prototype gives you the opportunity to really tap into your creativity, using those skills that inspired your invention idea in the first place. And whether you're making your prototype at home or hiring the services of an engineer, seamstress or machinist, it's truly exciting to see your idea transformed into something tangible and real.</span>
Explanation:
the answer should be d because of the concentration gradient see if that makes sense
