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:  -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 plants and animals lifespans decrease on less bad effects of pollution.?
against

Process:  -Bats and other animals produce a high-pitched tone -The sound travels in waves, as sound does -The sound "bounces" off of a nearby object -The sound wave returns to the bat -The bat hears the echoed sound -Folds in the bat's ear and adaptations in the bat's brain enable it to determine the size, shape, and position of the other object via the properties of the returned sound waves -Other animals use echolocation in generally similar ways -
 Question: What is the effect of the air is in an enclosed airtight area on bats produce a high-pitched tone.?
none

Process:  -Your thermostat senses that the room temperature has fallen below your thermostat setting -Your thermostat sends a signal to your heating system to provide heat for your home -When your oil burner is engaged, heating oil travels from the tank to the burner by way of a pump -Here the oil becomes a fine mist mixed with air -The fuel/air mixture is then injected into the burner where it is ignited in the combustion chamber -The warm air is disbursed through vents, hot water through baseboards, or by steam radiators -
 Question: What is the effect of the oil valve has a hole that is too big on less oil will burn.?

for