"A. labelling food supplies" and "B. monitoring water supplies" are both public health measures that have helped fight disease. Vaccinations are essential to public health.
Answer:A habitat is the place where an organism lives while a niche is that organism's role within that environment.
Explanation:
D surface tension because, adhesion is sticking, b makes no sense for this question, and heat has nothing to do with it either, because it distributes it's weight throughout its legs so it doesn't sink (it doesn't weigh much so this works.)
Hope this helps don't forget to hit that heart :)
Answer:
When light energy is absorbed by a chlorophyll molecule its electrons gain energy and move to higher energy levels in the molecule
