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".

Process:  -A dam is built in an area prone to flooding -A large amount of rain occurs -The water builds up behind the dam -The dam opens its floodgates when it starts to get full -The water flows into a river below the dam -The dam closes its gates -The dam will occasionally open its gates again to gradually release more water -Eventually all of the floodwater will be slowly released into the river without causing any flood damage.
 Question: What is the effect of when the dam has not released water recently on water levels decrease at a dam.?
against

Process:  -Pollution enters natural water sources such as rivers and lakes -The pollution negatively affects the water quality -The pollution negatively affects the health of plants and animals -The plants and animals have shorter, less healthy lives -The plants and animals do not reproduce very well -The number of plants and animals decreases over time -The quality of water gets worse and worse as there are no plants or animals to clean it -Eventually there is nothing living in the water and it is unusable -
 Question: What is the effect of there are less birds that grow into adults on less bad effects of pollution.?
none

Process:  -Several types of gases form in the atmosphere -May come from different sources -The gases remain trapped in the atmosphere -Through the suns light the gases hold in heat and energy -Trap them in our atmosphere -The earth may become warmer this way.
 Question: What is the effect of people heat homes with geothermal power on less gases are trapped in the atmosphere.?

for