The variable that a scientist observes to change while conducting an experiment is called the variable.
a.) mainipulated
b.) responding
c.) independent

Great Question!

The Answer Would Be "B" The "RESPONDING" Variable

The variable that a scientist observes to change while conducting an experiment is called the responding variable.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.