Task: Question Answering
Input (English): Process:  -A photovoltaic cell is created with two layers of semiconductor material -The top layer are &#x27;doped&#x27; with impurities to allow a negative charge -The bottom layer are &#x27;doped&#x27; to allow for a positive charge -This produces an electric field that allows electrons to flow from negative to positve -Sunlight enters the cell -Energy from sunlight knocks electrons loose in both fields -This prevents the flow of electrons from negative to positive -Adding an external circuit allows the exchange to continue -Give the cells owner a flow of electricity.
 Question: What is the effect of there are more trees blocking the sunlight on sunlight knocks electrons loose less often.?
Output (English): for