Sap transport proteins. Recent evidence indicates that mobile proteins and RNA are part of the plant's long-distance communication signaling system. Evidence also exists for the directed transport and sorting of macromolecules as they pass through plasmodesmata." A large number of insects of the order Hemiptera (the half-wings), feed directly on phloem sap, and make it the primary component of their diet. Phloem sap is "nutrient-rich compared with many other plant products and generally lacking in toxins and feeding deterrents, [yet] it is consumed as the dominant or sole diet by a very restricted range of animals". This apparent paradox is explained
Sugary drink tax Michael Bloomberg of orchestrating the controversial bill from overseas. In late October 2013, the Mexican Senate approved a 1 MXN per litre tax (around 0.08 USD) on sodas, along with a 5% tax on junk food. Research has shown that Mexico's sugary drinks tax reduced soft drink consumption. According to a 2016 study published in "BMJ", annual sales of sodas in Mexico declined 6% in 2014 after the introduction of the soda tax. Monthly sales figures for December 2014 were down 12% on the previous two years. Households with the fewest resources had an average reduction in purchases of 9%