[Q]: -  The water freezes and thaws - Cracks form in the rocks - Cracks also form when rocks heat up - The rocks slowly break down.  What might be the first step of the process?
****
[A]: Water seeps into rocks


[Q]: -  Water is in the air - The water forms tiny ice crystals - The ice crystals collide with each other - The ice crystals stick to each other - The ice crystals get bigger as more of them stick together - The ice crystals get too heavy to be in the air - The ice crystals become snowflakes - The snow flakes fall to the ground as snow.  What might be the first step of the process?
****
[A]: The air is cold


[Q]: -  Carbon dioxide from the burning fossil fuels enter the atmosphere - The make-up of the atmosphere changes - Some energy from the sun cannot escape back through the changed atmosphere - The earth begins to heat because of the extra trapped energy - Human beings cut down trees - Human beings do not re-plant the trees - Trees cannot help take the extra carbon dioxide from the atmosphere - The extra trapped energy starts to change the earth&#x27;s short term weather - Eventually the long-term climate patterns start to change -   What might be the first step of the process?
****
[A]: Human beings burn fossil fuels (oil, gas, etc.)


[Q]: -  Your tongue helps out, pushing the food around while you chew with your teeth - The esophagus moves food from the back of your throat to your stomach - Strong muscles in the walls of the stomach and gastric juices break down food in your stomach - Your stomach moves the food into the intestines to complete digestion -   What might be the first step of the process?
****
[A]:
The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow