Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants, and of course, ethanol is important to Iowa. Given these facts, what is the most important product in Iowa among the following options: - Nebraska - Des Moines - Windmills - sugar - copper - food - Corn - paper
Corn

Caffeine is a central nervous system stimulant, and coffee is an excellent source of caffeine. Given these facts, what stimulates the central nervous system among the following options: - exercise - blood - rice - coffee - A drug. - a chime - ice - sweating
coffee

Q: Pushing on the pedals of a bike cause that bike to move, and first, overcoming inertia to move forward is difficult. Given these facts, what must be overcome when pushing on bike pedals among the following options: - hormones - Pollution - heat - activity - animation - inertia - friction - energy
A: inertia

Question: Flowers produce spores that develop into gametophytes, and another interesting flower is the Orchid flower. Given these facts, what produces spores that develop into gametophytes among the following options: - fungi - cacti - plants - ferns - Orchids - PDAs - barnacles - bushes
Answer: Orchids

*Question*
An egg requires warmth to survive, and inside of the eggs, the embryos grow by shedding their inelastic shell or exoskeleton. Given these facts, what inside of a shell requires warmth to survive among the following options: - oysters - abalone - bullfrogs - sand - beads - water - embryos - Echinoids
**Answer**
embryos

(Q).
Mutations are essential for evolution to occur, and natural selection is the mechanism of evolution. Given these facts, what enables natural selection to occur among the following options: - environment - mutations - competition - relocation - Darwin - evolutionary development - root growth - research
(A).
mutations