*Question*
Streams may start with runoff or water seeping out of a spring, and most water comes from precipitation. Given these facts, what do most streams start with among the following options: - swamp vegetation - heat produced - loose dirt - Decibels - Veins and arteries. - matter vibrating - visible energy - precipitation
**Answer**
precipitation

*Question*
An organism requires energy for growth, and fish Fish are the ultimate aquatic organism. Given these facts, what requires energy for growth among the following options: - tunicates - plants - the wind - the moon - a fish - cats - viruses - pigeons
**Answer**
a fish

*Question*
All life relies on a relatively narrow range of pH, or acidity, and biochemical reactions are catalyzed by enzymes that have very narrow ranges of optimum pH values. Given these facts, all what relies on a narrow range where biochemical reactions can be catalyze by enzymes among the following options: - sugar - weathering - Crops - CO 2 - climate - heat - life - weather
**Answer**
life

*Question*
Plucking a string can cause that string to vibrate, and plucked stringed instruments are the harp, guitar, and harpsichord. Given these facts, what do you strum to cause vibration among the following options: - brass instruments - waves - nerves - mechanical - energy - sound waves - guitars - drums
**Answer**
guitars