Basically they say "null hypothesis" according to source:
http://www.statisticshowto.com/what-does-it-mean-to-reject-the-null-hypothesis/
<h2>Answer:</h2>
The correct answer is option C which is The light reactions harvest ___ <u>energy____</u>, while the carbon reactions produce<u> __carbohydrates_____.</u>
<h3>
Explanation:</h3>
- The light dependent reaction is the first part of photosynthesis.
- In the light energy energy is captured and used to break a water molecule into hydrogen ans oxygen ions with free electrons.
- These electrons move into a electron transport chain lean to dark reaction.
- Energy from these electrons is used in the dark reaction to produce carbohydrates from the CO2 and H2O and energy from the light reaction.
It has a thick atmosphere of hydrogen and helium
