Q: -  Causes them to absorb aluminum from soil - The water runs off from the soil into lakes, streams, etc - Fish and their eggs die - Frogs and plants die - Insects and other wildlife die - The ecosystem is out of balance, causing further problems -   What might be the first step of the process?
A: Acid rain makes waters acidic

Q: -  The boiler produces steam under high pressure - The steam generated in the boiler flows down into a cylinder - Just ahead of the wheels, pushing a tight-fitting plunger, the piston - The piston is connected to one or more of the locomotive&#x27;s wheels through a kind of arm-elbow-shoulder joint called a crank and connecting rod - As the piston pushes, the crank and connecting rod turn the locomotive&#x27;s wheels and power the train along - An outlet valve opens and the piston pushes the steam back through the cylinder and out up the locomotive&#x27;s chimney -   What might be the first step of the process?
A: Coal is loaded into the firebox

Q: -  That bacteria begins to grow and reproduce inside the cells - The dividing bacteria begin to make toxins - Those toxins damage your cells - Disease symptoms may begin.  What might be the first step of the process?
A: Someone is infected with bacteria

Q: -  Embryo is C - Embryo grows and develops into a fetus inside the woman&#x27;s womb - The fetus is born - Begins to grow and develop through infancy and childhood - In the teenage years the human experiences puberty - Reaches sexual maturity - At 18 the human becomes an adult - Adult may procreate continuing the cycle.  What might be the first step of the process?
A: