1. Lack of money to receive treatment.
2. Lack of money to eat healthy (a bag of chips is cheaper than a fruit salad)
3. Lack of money to live/work in a healthy area with no pollution or other toxicity.
4. Lack of time to exercise (always working)
This is because the electrons are up around the oxygen more than they are around the hydrogen. The electrons are spinning around but they're around the oxygen more than they are around the hydrogen. This makes them polar because they have a charge on one end of the molecule. In a nonpolar molecule electrons are evenly distributed.
Answer:
-energy source
-wires
-device that needs electrical energy
Explanation:
just did it on edg2020
1.<span>If the scientist does a blind study, were he or she does not know which item they are testing </span>
<span>2) Tool used. making sure whatever measurement the investigator is using should be valid and reliable. avoiding the possible results to become biased and unstable due to errors which should be avoided </span>
<span>3) Sampling method. obtain the samples which are appropriate and that would cover the entire participants studied- not a half but the entirely of what you want to study. entirely means as much as the possible sample covers. </span>
<span>4) Have some one else double check your findings. hope that helped</span>