D.) black text on a yellow background. There is much more contrast in the colors black and yellow than the other choices.
The only two that apply is Oxygen and Water. The last one would be Carbohydrates.
Answer:
A medium.
<h3>Explanation:</h3>
It's the material the wave is travelling through.
Answer:
Na2S
Explanation:Just took the test
Answer:
in the wire last one is right
