Answer: A. greenhouse gas emissions
The issues concerning the increased and uncontrollable amount of greenhouse gases emitted by different industrialized nations today is among the areas that required the attention of several countries. These emissions greatly damages our ozone layer thus worsening global warming making us prone to all types of man-made and natural calamities.
Answer:
B because the first one is called tariffs.
Answer:
The tip would be $6.36
Explanation:
If the bill was $42.40, and you wanted to leave 15% tip

0.15 is the same as 15% and you multiple it by the amount to get your tip