Based on figure 7.18, which of these experimental treatments would increase the rate of sucrose transport into a plant cell?
a. decreasing extracellular sucrose concentration
b. decreasing extracellular ph
c. decreasing cytoplasmic ph
d. adding a substance that makes the membrane more permeable to hydrogen ions

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

The transport tubes for food coming down the plants are called?

Which direction does the energy flow in this energy pyramid ?