Each year, billions of people use plastic grocery bags worldwide. Plastic is not biodegradable, and many times, the bags end up in our oceans. This plastic debris is greatly impacting our marine ecosystems. What could be a solution to this problem?

Whether or not a given study has the possibility of causing harm to participants:

Chris, a master at office gossip and innuendo, says, "we know we have a corporate spy someplace in the organization, probably on the management team itself. there is no evidence that it is audrey. in fact, she's too clean, if you know what i mean. somebody should fire audrey; she's got to be the spy." by making this argument chris is actually engaging in (a) an appeal to emotion fallacy (b) a straw man fallacy (c) an appeal to ignorance fallacy (d) circular reasoning (e) an appeal to the mob fallacy

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?