The United States does not have an official federal e-waste regulation system, yet certain states have implemented state regulatory systems. ... The EPA estimates that in 2009, the United States disposed of 2.37 million tons of e-waste, 25% of which was recycled domestically.
Answer:
Option D
Explanation:
A variable expense is a unpredictable expense that can change depending on how much you go through that expense. In this case "going shopping" is a variable expense, the amount of money spent going shopping can change if you keep going shopping or stop going shopping.
Hope this helps.
D. Which of his or her friends should write a letter
It’s called collision warning... but a specific manufacturer may name it “front end collision warning”. Etc