Arrange the following five events in an order that explains the mass flow of materials in the phloem.

1. water diffuses into the sieve tubes.
2. leaf cells produce sugar by photosynthesis.
3. solutes are actively transported into sieve tubes.
4. sugar is transported from cell to cell in the leaf.
5. sugar moves down the stem.

a) 2, 1, 4, 3, 5
b) 1, 2, 3, 4, 5
c) 2, 4, 3, 1, 5
d) 4, 2, 1, 3, 5
e) 2, 4, 1, 3, 5

Astudent visits the beach during a very hot day she steps on the santa and jumps because it is so hot what type of heat transfer is demonstrated by the sand in this example

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Which best describes carbon dioxide’s path out of the body