instruction:
In this task you will be given a process, and a question. The process contains a sequence of steps that happen in order. The question asks about the effect of a certain event on another event. If the first event has a positive effect on the second event, answer with "for", if it has a negative effect, answer with "against". If there's no causal relationship between the two, answer with "none".
question:
Process:  -When water freezes it becomes 10% bigger, or takes up 10% more space -As water expands it puts great pressure on the walls of anything containing it, including any rocks which happen to be surrounding it -The force of the pressure exerted on the rock surrounding it is enough to wedge the walls of the crack farther apart, thus expanding and deepening the crack -Clay expends when wet like ice does -This causes rock to break apart -Some plants like mosses and lichens are capable of growing without soil on bare rock -When they do this their roots penetrate pores and crevices and cause rocks to split apart as the roots force their way down through the rocks -
 Question: What is the effect of there is a drought on less water will freeze.?
answer:
for


question:
Process:  -A plant grows near or on a rock -The plant roots begin to grow -Break apart the rock -The plant acids dissolve parts of the rock -The rocks are broken into more and more pieces -Erosion starts to occur.
 Question: What is the effect of a smaller plane is used on more or faster weathering occurring.?
answer:
none


question:
Process:  -Water is heated -The heated water evaporates -The salt is left behind -The evaporated water condenses on a cold surface -The evaporated water is collected -The process is repeated -More salt is removed from the water.
 Question: What is the effect of there is not much of a heat source on more salt being removed from the water.?
answer:

for