Question: What is the missing first step of the following process:  -  The magma cools - Particles inside the magma move closer together - Crystals are formed - The crystals contain minerals.
Answer: Magma comes up to the surface of the earth

Question: What is the missing first step of the following process:  -  Your diaphragm moves down - Your lungs have more room - Your lungs fill with air - You exhale - Your diaphragm moves back up - Carbon dioxide is exhaled - You start the process over again.
Answer: You inhale

Question: What is the missing first step of the following process:  -  The pollution negatively affects the water quality - The pollution negatively affects the health of plants and animals - The plants and animals have shorter, less healthy lives - The plants and animals do not reproduce very well - The number of plants and animals decreases over time - The quality of water gets worse and worse as there are no plants or animals to clean it - Eventually there is nothing living in the water and it is unusable -
Answer:
Pollution enters natural water sources such as rivers and lakes