[Q]: - The virus has receptors that lock onto a target cell - The virus enters the cell - The virus uses the cell like a factory to make new copies of the virus - The new copies of the virus leave the cell - Infect other cells - The host gets sick as its cells are damaged. What might be the first step of the process?
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[A]: A virus enters a host body

[Q]: - The sperm implants itself into the egg - The sperm and egg form a zygote on the wall of the uterus - The fetus grows and develops - The woman gives birth to a baby - The baby is raised by parents until it is able to take care of itself - The person goes out into the world and finds a job - The person meets other people and has a life - The person gets a career, and gets married - The person retires and eventually passes away - What might be the first step of the process?
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[A]: A sperm meets an egg in the uterus of a woman

[Q]: - Your town or a private company collect and transport the aluminum to a recycling facility - The aluminum is sorted and cleaned at the central recycling facility - The aluminum is melted down to remove coatings and inks - The melted aluminum is formed into large formations called ingots - The ingots are transported to another facility and rolled out to make them easier to manipulate - The ingots can now be turned into new aluminum products. What might be the first step of the process?
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[A]: You place aluminum cans and other products into recycling bins

[Q]: - The water combines with carbon dioxide in the air to form carbonic acid - As the acid is formed, the iron starts to dissolve - Some of the water breaks down into hydrogen and oxygen - The free oxygen and dissolved iron bond together - They form iron oxide, which is rust - What might be the first step of the process?
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[A]:
Water comes into contact with something made of iron