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:  -Fuel mixes with air -Mix gets inducted into cylinder -Piston compresses the mix -Spark plug emits a spark that ignites it causing combustion -Combustion gases expand -Pushes piston during power stroke -Exhaust valve opens to vent exhaust out tail pipe.
 Question: What is the effect of the engine valves do not get stuck on less power being generated by the engine.?
against

Process:  -A plant dies -The remains of the plant are buried very fast in sediment -The soft parts of the plant decay -The hard parts of the plant are replaced with minerals -The sediment turns into rock -The rock erodes -The fossil appears on the surface of the ground.
 Question: What is the effect of minerals are abundant in the sediment covering the dead plant on less of the plant will be preserved as a fossil.?
against

Process:  -Two birds meet each other -Egg is produced after fertilziation -Mother sits on egg until it hatches -Bird Hatches -Grows up -Flee the next -Starts family -Dies.
 Question: What is the effect of less deforestation occurs on less eggs hatch.?

none