Answer:
The angle and location
Explanation:
There are some who can't perceive the order of red and green together. Having it angled up and down is safer because you know out of common sense that red is on top and green is on the bottom. Having it sideways makes the light elevated on the same level, deceiving the eye better.
Answer:
regression of bacteria numbers
Explanation:
because it could have became infected
In chemical reactions the substances present at the start of the reaction are reactant and the substances produced are called product
