The answer should be the Hepatic portal vein.
Hope this helps.
It is imply to cold in the North for tropical plants to grow. A tropical plant needs constant warmth, but the Northern United States has fluctuations between extreme cold and extreme heat.
In lab, we used Benedict's reagent to test for one particular reducing sugar: glucose. Benedict's reagent starts out aqua-blue. As it is heated in the presence of reducing sugars, it turns yellow to orange. The "hotter" the final color of the reagent, the higher the concentration of reducing sugar.
Chloroplasts are the cells I plants that carry out the process of photosynthesis.