input: Please answer the following: What is the missing first step of the following process: - The earth changes energy from the sun into heat - Heat rises from the ground - Greenhouse gas molecules in the atmosphere prevent the heat from going into space - The temperature of the earth increases - The temperature continues to rise and melts the polar ice caps - The temperature rises even faster.
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output: Greenhouse gases are released into the air by human activities

input: Please answer the following: What is the missing first step of the following process: - Owls sit at high points in trees and look around - When an owl spots a rodent they track it - When the rodent is standing still the owl swoops down - The owl grabs the rodent with their tallons - The owl uses their beak to eat the rodent.
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output: Owls have specially adapted eyes that see better at night

input: Please answer the following: What is the missing first step of the following process: - Aluminum flows into streams and lakes - Acid rain dissolves minerals and nutrients in soil - Washes them away so plants can't benefit from them - PH in soil and water gets affected which can kill plants and animals - Acid rain in fog at higher elevations can strip foliage off trees.
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output: Acid rain leaches aluminum from clay particles in soil

input: Please answer the following: What is the missing first step of the following process: - 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.
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output:
A dam is built in an area prone to flooding