Answer:
The independent variable in this experiment is what he feeds the chickens (rice or corn).
Explanation:
The independent variable is the variable the experimenter manipulates or changes.
1. air components change from place to place, while water will just stay the same
2. Water doesn't have nor show individual properties, but air does show that it has it's own property
3. You can separate different gases from air physically, but with water you must pass electricity through it.
Don't take my word for it, this is just what I learned back in middle school.
Answer: +35
explanation: 30+35£~£
<span>The number of protons are different from the other element. Protons are what make an element that particular element, ans so that pretty much what distinguishes the atoms of one element from the atoms of another.</span>