Read each example and decide what the resulting effect on the gene pool of that population would be. _ A zebra migrates to join a different herd of zebras.

_Competition for sunlight leads to taller trees.

_The DNA of a snake changes to make its venom stronger.

_A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

< > arsenal < >

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

i think its both a and b