In this task, you are given a paragraph, and your task is to construct a question from the given passage. Construct question in such a way that (i) it is well explained in the paragraph, (ii) the words may/may not be present in the paragraph, (iii) it should start with what/how/describe. Avoid creating a question that (i) is just relevant to one or two sentences, and (ii) not relevant to passage. 

Let me give you an example:  Magma rises from deep in the earth. The magma goes into volcanos. The volcanos pressure the magma upwards. The pressure causes the magma to push through the surface of the volcano. The lava cools. The lava forms new rock. New magma is pressured to the surface of the volcano. The volcano bursts through the rock the formed after the last eruption. 
The answer to this example can be:  What causes a volcano to erupt? 
Here is why: The process paragraph explains in steps about - the cause for volcano eruption. The keywords in the question are relevant to the process paragraph given. So, this is a good question.

OK. solve this:
Green is a color that gathers sunlight easily. Sunlight is gathered by the leaves of the plant. The sunlight is broken down into glucose through photosynthesis. The glucose travels the plant. The plant uses that glucose as energy to grow. 
Answer:
How do green plants get the energy they need?