you are a astrobiologist who studies other planets for signs of lif you have discovered a unique subtance wich is made up of four metals organized in a specific and relatable pattern when exsposed to electromagnetic radiation this subtance becomes bigger and can produce multiple copies of itself if it is poked with a stickk it moves away from the stick if the subtance is keptin a dish for a while rust accumulates in the dish is it living or nonliving

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

other information encoded in your genes might distinguish you from the others in the group

they kick it to the curb.

explanation:

that current was nasty.