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".

Q: 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.?

A: none
****
Q: Process:  -A larva is born -The caterpillar eats constantly until it grows bigger -The caterpillar starts to form a cocoon around itself -The caterpillar becomes a pupa -After some time the cocoon hatches -And a butterfly is born.
 Question: What is the effect of predators eat more caterpillars on more butterflies.?

A: against
****
Q: Process:  -Water gets into cracks in rocks -The water freezes into ice -The cracks expand -Over time the rocks split -The rocks are now in smaller pieces.
 Question: What is the effect of there is less acid rain entering the atmosphere on less or slower weathering occurring.?

A:
none
****