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 the two neighboring cities. A 2017 before and after study has concluded that one year after the tax was introduced in Berkeley, sugary drink sales decreased by 9.6% when compared to a scenario where the tax was not in place. This same study was also able to show that overall consumer spending did not increase, contradicting the argument of opponents of the Sugary Drink Tax. Another 2017 study results were that purchases of healthier drinks went up and sales of sugary drinks went down, without overall grocery bills increasing or the local food sector losing money. Democratic Philadelphia mayor Jim